Dr Lê Ng�c Năng delivering a speech on behalf of the graduates at the 2026 Doctoral and Master’s Graduation Ceremony.

“My initial motivation was not to pursue a degree, but rather arose from a passion for discovery and research.� Driven by a fascination with the stories hidden behind each mineral, Lê Ng�c Năng has dedicated nearly two decades to the fields of gemmology, gemstone identification, and scientific research. In 2026, he became the first new doctoral graduate in Geology from VNUHCM–University of Science (HCMUS).

Geology provides profound motivation for continued exploration and research

Upon entering university in 2003, Lê Ng�c Năng had yet to form a complete vision of his future career path. At the time, his thoughts regarding the Geology programme were quite simple: to travel widely, explore forests and mountains, observe nature, and discover new things.

“That very excitement led to my decision to enrol. Later on, the more I interacted with nature and professional work through field trips, the more attached I became to this field,� he recalls.

The field trips undertaken during his studies helped him understand, step by step, that every layer of soil, rock sample, or mineral contains information about the history of the formation and movement of the Earth. The initial curiosity, therefore, did not stop at a mere fondness for nature, but gradually developed into a need for systematic understanding.

After graduating with a specialisation in Minerals in 2007, he began working in the gemstone sector as an identification specialist. At that time, the gemstone identification industry in 17³Ô¹Ï was relatively novel. According to him, Ho Chi Minh City placed only about three to four gemstone testing laboratories and one diamond grading laboratory. The shortage of professional human resources, research data, and specialised institutions presented a challenge, yet simultaneously opened up a promising professional landscape for young individuals interested in gemmology.

In mid-2017, after accumulating considerable experience, he founded the LIU Gemological Research and Application Centre and has served as director until the present day.

The work of identification allows him to encounter numerous types of gemstones, but also raises further questions about the characteristics, origins, and formation processes of each specimen. For him, a stone is not merely identified by colour, clarity, or commercial value. The structural characteristics, composition, and properties also preserve traces of geological processes that occurred long ago.

“Geology offers substantial motivation for me to continue searching and researching. Following graduation and entering employment, I have still dedicated time to independent research and learning,� Dr Lê Ng�c Năng shares.

Returning to university to research practical issues

In 2023, Lê Ngá»�c Năng commenced his doctoral training programme in Geology at HCMUS. He chose to research the topic “Mineralogical, gemmological characteristics and origin of gemstones related to basalts in the Southeast region, 17³Ô¹Ïâ€�, under the academic guidance of Associate Professor Phạm Trung Hiếu.

The thesis focuses on studying the mineralogical, gemmological characteristics and origin of gemstones associated with Cenozoic basalt formations widely distributed in the Southeast region. By combining research methods from geology, petrology, and geochemistry with modern gemmological and spectroscopic analysis techniques, the research has identified seven types of minerals suitable for use as gemstones, comprising: sapphire, zircon, pyrope (garnet), anorthoclase (alkali feldspar), augite, brown peridot, and opal.

The results demonstrate that gemstones in the region generally possess mineralogical and gemmological features similar to characteristics recorded worldwide. Nevertheless, certain notable differences were also discovered, contributing to the enrichment of scientific data and the refinement of identification criteria and quality assessment for basalt-related gemstones in 17³Ô¹Ï.

Alongside the thesis, Dr Lê Ng�c Năng has published seven scientific papers in prestigious domestic and international journals, demonstrating a rigorous approach and strong research capacity within the fields of geology and gemstones.

According to Dr Lê Ng�c Năng, the greatest difficulty when studying for a doctorate is the limited amount of time available. Research takes place alongside professional work and personal responsibilities, requiring him to establish long-term plans, break down each stage, and frequently adjust progress. The support of family and colleagues also helped him sustain his studies and research.

An academic environment expanding research capabilities

As someone trained continuously from undergraduate to doctoral level at HCMUS, Dr Lê Ng�c Năng believes that the learning and research environment here is built upon a foundation of rigour, transparency, and responsibility. In his view, although conditions regarding infrastructure and research space still face certain difficulties, the quality of education, scientific spirit, integrity, and humanity are always preserved and promoted across generations of learners.

During the process of completing the thesis, guidance from the teaching staff along with domestic and international research cooperation networks supported him in academic exchange, deep sample analysis, and the publication of scientific results.

From personal experience, he wishes for students and postgraduates with a passion to boldly participate in scientific research, whilst proactively preparing professional knowledge, foreign languages, research skills, and data analysis techniques.

“This path is not always straightforward because research demands perseverance, a willingness to learn, and the ability to overcome failures. However, every result achieved holds significance as a contribution to knowledge and the development of the country,� Dr Lê Ng�c Năng remarks.

The technology entitled “Memristor Structures with Analog Switching Characteristics and Method for Fabricating the Same� has recently been granted United States Patent US 12,670,378 B2 by the United States Patent and Trademark Office (USPTO).

The inventors comprise Assoc. Prof. Phạm Kim Ngá»�c and MSc Phạm Phú Quân from VNUHCM–University of Science (HCMUS); Prof. Phan Bách Thắng from VNUHCM-University of Health Sciences; and Assoc. Prof. Nguyá»…n Trần Thuật from the Institute of Semiconductors and Advanced Materials, 17³Ô¹Ï National University, Ha Noi (VNU).

An idea rooted in materials science

For more than a decade, global research into memristors has concentrated predominantly on metal oxide systems such as , , and . This patent establishes a novel paradigm by constructing and protecting a materials platform based on chromium oxide () for memristor technology. Rather than merely proposing a specific device architecture, the invention positions  as the central functional material, which can be flexibly integrated with various oxide layers and metal electrodes to design new generations of memristors. This platform paves the way for devices capable of multi-state storage and non-linear operation—core characteristics required to realise artificial synapses within next-generation computing hardware.

The nucleus of a new computing architecture

The prominent feature of the patent lies not only in the memristor structure itself, but also in the deployment of this material system into synapse arrays. The invention describes a [Row  Column] array architecture integrated with passive selectors (diodes), wherein each intersection functions as a memristor acting as an electronic synapse, capable of simultaneous local data storage and processing. This architecture opens up avenues for developing In-Memory Computing and Neuromorphic Computing chips, where millions of memristors can be integrated into hardware neural networks. Such networks possess the capacity to execute parallel computations, thereby significantly reducing data transfer between memory and processors.

A foundation for the future

The journey from a novel material design in the laboratory to an international patent represents the inception of a grander vision: the development of integrated AI chips powered by memristor technology. The invention emerged from research activities undertaken at the Faculty of Materials Science and Technology, HCMUS. This milestone further strengthens the foundation for collaborative programmes between scientists at VNUHCM and VNU across the entire research chain, spanning from materials and devices to semiconductor chip technology.

The research process received funding and support from the Vingroup Innovation Foundation (VinIF) and HCMUS. This financial backing was instrumental in connecting specialized research groups, sustaining investigative activities, and enabling laboratory findings to mature into internationally protected intellectual property.

On 6 July, at VNUHCM–University of Science (HCMUS), doctoral researcher Nguyá»…n Thị Thanh Lý successfully defended her doctoral thesis in Mathematical Analysis. The thesis, entitled “Ulam-Hyers stability of some functional equations and applications”, was completed under the academic supervision of Associate Professor Nguyá»…n Văn DÅ©ng and Associate Professor Lý Kim Hà.

The doctoral thesis focuses on the stability of several vital classes of functional equations in modern analysis, including generalized multilinear functional equations, generalized quadratic functional equations, generalized mixed additive–quadratic functional equations, and generalized cubic functional equations in quasi-Banach and quasi-p-Banach spaces. These research areas hold significant importance within functional equation theory and functional analysis, helping to clarify problems regarding the stability of solutions under the influence of small deviations or perturbations.

Utilizing research methodologies from modern analysis and the stability theory of functional equations, the thesis establishes sufficient conditions for the Ulam-Hyers stability of the aforementioned classes of functional equations. The achieved results not only extend the scope of application for numerous previously published works but also provide fresh approaches to studying stability within generalized spaces.

Among the prominent outcomes of this research is the formulation of corollaries for multiple special cases of functional equations, alongside answers to several open questions in the field. Furthermore, the doctoral researcher constructed counterexamples and illustrative examples to clarify the limitations of the theoretical findings and evaluate the applicability of the proposed methods.

The research findings have been published in three international scientific papers indexed in the Web of Science (WoS), comprising one Q1 journal article, one Q2 journal article, and one Q3 journal article.

In terms of scientific significance, the thesis contributes to developing the stability theory of functional equations in generalized spaces, whilst providing further theoretical tools and illustrative examples that can be inherited, extended, or applied in related research directions. The results and approaches presented in the thesis can also be further developed to investigate the stability of other classes of functional equations in quasi-Banach, quasi-p-Banach, and more generalized spaces.

On the morning of 26 June 2026, the Faculty of Economics at the VNUHCM–University of Economics and Law (UEL) hosted the Land Economics Education Networking Programme between VNUHCM–University of Science (HCMUS) and the VNUHCM–University of Economics and Law. The programme brought together academic staff and students from the Land Economics programme under the Faculty of Geology, HCMUS.

The programme was organised to support the first cohort of Land Economics students as preparation began for the next stage of study at UEL following completion of the first academic year at HCMUS.

The Land Economics programme is an interdisciplinary, inter-university degree jointly delivered by HCMUS and UEL. The curriculum combines the strengths of both institutions: expertise in Earth sciences, natural resources and land management from HCMUS, together with economics, management, law and public policy from UEL. Through this integrated approach, the programme aims to educate highly qualified graduates capable of meeting the growing demand for sustainable land resource management, utilisation and development.

During the programme, students received an introduction to the learning environment, curriculum, student support services, research opportunities, scholarships, and student organisations, including Youth Union and Student Association activities, clubs and societies at UEL. The programme also provided opportunities for discussion with academic staff and students from both institutions on the curriculum, study pathways and experiences within an inter-university educational environment.

The networking session took place in an open and welcoming atmosphere, enabling students to become familiar with a new academic environment while strengthening connections among academic staff and students from both institutions. The occasion also provided the inaugural cohort of Land Economics students with valuable information and greater confidence in preparation for the next phase of the degree programme.

Through this programme, HCMUS and UEL further reaffirmed close collaboration in delivering an interdisciplinary, inter-university degree. The partnership draws upon the distinctive strengths of each institution to provide a multidisciplinary learning environment, contributing to the education of graduates equipped with interdisciplinary knowledge and professional capabilities to address emerging needs in land management and land economics.

HCMUS working visit to Osaka Metropolitan University (OMU) on 18 June 2026.

With the aim of expanding opportunities for learning, research, and academic exchange for lecturers, students, and postgraduate researchers, from 18 to 20 June 2026, a delegation from VNUHCM–University of Science (HCMUS) undertook a working visit to two academic partners in Japan: Osaka Metropolitan University (OMU) and Toyota Technological Institute (TTI).

The delegation comprised representatives from academic affairs, postgraduate education, science and technology, external relations offices, and academic faculties of HCMUS.

Expanding international learning opportunities with Osaka Metropolitan University

On 18 June, the delegation held a working session with leaders and representatives from functional units of Osaka Metropolitan University, one of Japan’s major public universities.

During the session, both sides introduced development strategies, strengths in education and research, and discussed opportunities for collaboration in student exchange, short-term academic programmes, and academic engagement between lecturers and students from both universities.

Representatives from OMU shared information on scholarship opportunities, international exchange programmes, and courses designed for international students. In the coming period, both sides will continue coordination to strengthen academic connections and provide students of HCMUS with further opportunities for international learning and academic experience.

In addition to the working programme, the delegation visited facilities, classrooms, and research spaces at OMU to gain insight into the educational model and academic environment of the university.

Continuing more than 15 years of collaboration with Toyota Technological Institute

On 19 June, the delegation continued the working programme with Toyota Technological Institute, a partner that has collaborated with HCMUS in training, education, and research initiatives since 2010.

During the session, both sides reviewed achievements from more than 15 years of collaboration and discussed future development directions, particularly double degree programmes and short-term exchange opportunities for students.

As part of the visit, the delegation toured several advanced laboratories at TTI, including the Polymer Chemistry Laboratory, Organic Catalytic Chemistry Laboratory, Mechanical Materials Engineering Laboratory, Laser Science Laboratory, and cleanroom facilities supporting high-technology research.

Academic exchanges at the laboratories enabled lecturers and researchers from both universities to connect, share research directions, and explore potential collaboration in key areas of science and technology.

The delegation also met Nguyễn Thị Như Quỳnh, a doctoral researcher from HCMUS currently participating in a research exchange programme at TTI. The meeting provided HCMUS with insights into academic and research progress in an international environment, while demonstrating the practical impact of collaborative training programmes between both universities in developing high-quality human resources.

Expanding international collaboration networks

The working visit to Japan reaffirmed HCMUS commitment to expanding international partnerships and enhancing the quality of education and scientific research in line with international standards.

Through strengthened collaboration with prestigious Japanese universities, HCMUS aims to create further opportunities for lecturers, students, and postgraduate researchers to participate in exchange programmes, joint research, and international education initiatives, contributing to an academic environment characterised by global engagement, innovation, and sustainable development.

 

On 24 June, VNUHCM–University of Science (HCMUS) hosted a symposium titled ‘Emissions Reduction Potential of Wetland Ecosystems in the Mekong Delta’. The event brought together scientists, experts, business leaders, and policymakers to share recent research findings and propose scientific and technological solutions aimed at reducing greenhouse gas emissions and adapting to climate change.

As 17³Ô¹Ï implements commitments to achieve net-zero emissions by 2050, wetland ecosystems are increasingly recognised not merely for biodiversity conservation, but as vital natural infrastructure capable of absorbing and storing carbon whilst helping to regulate the climate. Accurately assessing the potential of these ecosystems has become essential for developing resource management policies, advancing carbon markets, and implementing nature-based adaptation strategies.

In the opening address, Dr Phạm Quỳnh HÆ°Æ¡ng, Director of the Research Centre for Greenhouse Gases and Climate Change at HCMUS, noted that climate change increasingly impacts the lives, production, and livelihoods of local communities. Consequently, research into greenhouse gas mitigation solutions is urgent for 17³Ô¹Ï and crucial for achieving global sustainable development goals.

According to Dr Phạm Quỳnh Hương, ecosystems such as mangroves, melaleuca forests, seasonally inundated grasslands, aquaculture areas, and rice cultivation systems possess the capacity to store substantial volumes of carbon within biomass and soil. Conversely, these environments can also release methane and nitrous oxide if managed improperly. Therefore, integrating research into hydrology, soil characteristics, and nutrient cycles with advanced monitoring technologies will establish the scientific foundation required to maximise carbon sequestration whilst mitigating greenhouse gas emissions.

A notable highlight of the symposium was the growing synergy between environmental science and digital technology in emissions reduction research.

Presentations introduced several novel research directions, including the application of IoT and artificial intelligence (AI) in water regulation for low-emission rice production; the deployment of the Eddy Covariance method to measure gas exchange within agricultural and forestry ecosystems; and investigations into the relationships between flooding regimes, soil properties, and greenhouse gas emissions in the seasonally inundated grasslands of Tram Chim National Park.

Furthermore, studies on the ‘blue carbon’ sequestration capacity of aquatic plants in U Minh Thuong National Park, the role of mangroves in emissions reduction and climate adaptation, and life cycle assessments of black tiger shrimp raised under mangrove canopies in Ca Mau opened new avenues for linking scientific research with green economic development and carbon markets.

Experts agreed that effectively exploiting the potential of wetland ecosystems demands close coordination between environmental science, monitoring technology, resource management, and economic mechanisms, particularly carbon markets and green finance.

Experts sharing research findings and scientific-technological solutions related to greenhouse gas emissions reduction in wetland ecosystems.

Discussions at the symposium provided further scientific evidence to inform wetland management policies that simultaneously enhance ecological, economic, and climate values. The event also established a framework for strengthening collaboration between universities, research institutes, businesses, and regulatory bodies to develop ecosystem-based mitigation solutions, thereby supporting sustainable development in the Mekong Delta and contributing to the national emissions reduction strategy.

Scientists, experts, business representatives, and regulatory officials discussing sustainable management solutions for wetland resources in the Mekong Delta.

 

On 22 June, the VNUHCM–University of Science (HCMUS) hosted a meeting with SAMTEC 17³Ô¹Ï Co., Ltd. to discuss strategic directions for cooperation in education, internships, and the development of high-quality human resources.

Attending the meeting on behalf of SAMTEC 17³Ô¹Ï were Mr Chung Teck Chin, General Director; Ms Jennifer Nguyen, Head of Human Resources; Ms Anh Dang, HR Supervisor; Mr Michael Bui, Head of Engineering; Mr Jonathan Long, Training Supervisor; and Ms Sam Dang, Recruitment Specialist.

Representing HCMUS were Associate Professor Trần Minh Triết, Vice-President; Associate Professor Võ Hồng Hải, Deputy Head of the Office of External Relations; Dr Bùi Tr�ng Tú, Dean of the Faculty of Electronics and Telecommunications; and Associate Professor Huỳnh Văn Tuấn, Dean of the Faculty of Physics and Engineering Physics.

During the session, both sides shared insights into development strategies, human resource demands, and potential opportunities for collaboration. These discussions took place against the backdrop of rapid growth in the electronics, semiconductor, and high-tech industries, which drives an increasing demand for engineers equipped with solid expertise and the agility to adapt to real-world working environments.

Associate Professor Trần Minh Triết, Vice-President, emphasised that HCMUS consistently prioritises expanding partnerships with industry to enable students to gain early exposure to manufacturing, research, and technological development. Through internships, career experiences, and professional collaboration, students are given the chance to apply theoretical knowledge to practical scenarios whilst enhancing their capability to meet the requirements of the labour market.

The representatives from SAMTEC 17³Ô¹Ï introduced the corporate operations in developing electronic connectivity solutions, encompassing high-speed interconnect technology, cable systems, optical solutions, RF, and applications serving the electronics industry. Founded in the United States in 1976, SAMTEC operates as a global technology enterprise with a manufacturing and technical support network spanning multiple countries.

A key focus of the meeting was the Co-op Program designed for final-year students with outstanding academic records (achieving a GPA of 3.5/5 or above). According to the proposal from the company, this initiative allows students to combine academic studies with practical work at the enterprise, structured as part-time employment during the academic year and full-time placement over the summer vacation. Students participating in this scheme not only gain access to a professional working environment and accumulate practical experience but also receive support throughout the placement, alongside prospects of transitioning into permanent roles upon graduation.

Furthermore, both parties exchanged views on internship programmes, recruitment drives, career guidance activities, and talent acquisition channels tailored for engineering students, particularly within the fields of electronics–telecommunications and engineering physics.

The meeting opens up promising prospects for cooperation between HCMUS and SAMTEC 17³Ô¹Ï in aligning higher education with industry needs. This partnership creates further opportunities for students to engage with emerging technologies, experience international working environments, and prepare for professional careers whilst still at university.

Representatives from both institutions discussing collaborative frameworks for education, internships, recruitment, and university–industry links.

 

On 19 June, VNUHCM–University of Science (HCMUS) hosted a scientific seminar entitled “Navigating the Future: Harnessing Regional Ocean Models to Guide Climate Adaptation in Asia�. The event attracted lecturers, researchers, and students interested in oceanography, meteorology, hydrology, and climate science.

The keynote speaker was Professor Javier Zavala-Garay, a member of the Ocean Modeling Group at Rutgers University. The seminar focused on the role of regional ocean models in studying marine environmental changes and supporting the development of climate change adaptation strategies in Asia.

The seminar was attended by Associate Professor Võ Lương Hồng Phước – Head of the Department of Oceanography, Meteorology and Hydrology; Associate Professor �ặng Trư�ng An – Deputy Head of the Department, alongside lecturers, researchers, and students from the Faculty of Physics and Engineering Physics.

During the event, Professor Javier Zavala-Garay introduced the Regional Ocean Modeling System (ROMS) – one of the most widely used numerical modeling systems in the study of ocean dynamics. By simulating regional oceanographic features at high resolution, ROMS enables the analysis of variables such as currents, temperature, salinity, and ocean-atmosphere interactions.

According to the speaker, as climate change increasingly impacts coastal regions, ocean models serve not only foundational research but also function as essential tools for forecasting, risk assessment, and formulating adaptation scenarios.

The presentation also focused on the applied research of regional ocean models in Vietnam and Indonesia – two nations with extensive coastlines that are significantly affected by variations in the climate-ocean system. The simulation results contribute to a deeper understanding of regional oceanographic characteristics, whilst providing a scientific foundation for marine resource management, environmental protection, and the planning of climate change adaptation measures.

In addition to technical discussions, the seminar provided an academic forum for international experts to engage with HCMUS lecturers, researchers, and students. Topics concerning ocean modeling, data science, marine environmental forecasting, and interdisciplinary research trends in climate science were dynamically discussed.

Through this programme, learners gained access to modern research methodologies and emerging development paths within oceanography, meteorology, hydrology, and environmental science. This initiative represents one of many activities aimed at strengthening international academic connections, whilst fostering education and research in fields related to marine science and climate change at HCMUS.

Lecturers and students engage in discussions and pose questions to Professor Javier Zavala-Garay during the Q&A session.

 

On 18 June, VNUHCM–University of Science (HCMUS) organised the evaluation council for a Category C university-level scientific project entitled “Estimating Atmospheric Deposition of Heavy Metals in Southern Vietnamese Megacity�. The project was led by Dr Nguyễn Lý Sỹ Phú as principal investigator, alongside team members Assoc. Prof. Tô Thị Hi�n, MSc Trần �nh Ngân, MSc Võ Thị Tâm Minh, and BSc Trần Hoàng Minh.

Urban air pollution represents a critical area of concern within environmental research. In Ho Chi Minh City, previous studies have predominantly focused on assessing the concentration of airborne pollutants, particularly suspended particulate matter, whilst the deposition of atmospheric contaminants onto land surfaces and water bodies remains insufficiently documented. To address this research gap, the project was initiated to evaluate the extent of atmospheric heavy metal deposition, thereby providing a more robust scientific foundation for assessing the ecological impacts of air pollution on urban ecosystems.

Throughout the investigation, the research team developed a tailored methodology and engineered a rainwater sampling system suitable for the climatic conditions of Ho Chi Minh City. Collected samples underwent analysis via Inductively Coupled Plasma Mass Spectrometry (ICP-MS) to determine the concentration of various metallic elements, including Zn, Mn, Cu, Cr, Ni, Pb, V, and As.

The findings indicate that heavy metal concentrations in rainwater within the surveyed area mirror characteristics typically observed in urban environments heavily influenced by vehicular traffic, industrial manufacturing, and dust-generating sources. Among these elements, Zn emerged as the predominant component across the analysed samples. In addition to pollutant concentrations, the study examined the influence of heavy rainfall in Ho Chi Minh City on the transport and total deposition load of atmospheric metals into the environment.

By integrating analytical models such as the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model and Principal Component Analysis (PCA), the researchers identified potential source groups contributing to the presence of heavy metals in rainwater. These sources encompass transport activities, industrial production, construction operations, and natural dust sources.

The outcomes of this research contribute to a broader approach in urban environmental assessment, extending beyond baseline air quality monitoring at specific times to evaluate the transfer of pollutants from the atmosphere into other environmental compartments such as soil and water. The gathered data offer a valuable reference framework for subsequent studies regarding the distribution, accumulation, and ecological consequences of heavy metals within urban environments.

In terms of academic publications, the project yielded one paper in the Q1-ranked international journal Environmental Science: Atmospheres published by the Royal Society of Chemistry, one paper in a Q2 international journal, and one research article in the Science and Technology Development Journal – Natural Sciences. Furthermore, the project supported capacity building by contributing to the academic completion of one master’s student and three undergraduate students.

The evaluation council concluded that the project successfully fulfilled the research objectives set out in the proposal, employing rigorous methodologies and delivering scientifically significant results for environmental monitoring and quality assessment; the council subsequently voted unanimously to approve the official acceptance of the project.

On 18 June, the VNUHCM–University of Science (HCMUS) convened an evaluation committee for a VNUHCM-level science and technology project entitled “Research on the anomalous Hall effect of ferromagnetic materials using first-principles simulation,� chaired by Dr Trịnh Thị Lý, the project examines the control mechanisms of the anomalous Hall effect within ferromagnetic materials, aiming to provide a scientific foundation for designing materials applicable to the field of spintronics.

The anomalous Hall effect represents a crucial phenomenon in magnetic materials, holding significant potential for application in next-generation spintronic devices. A primary area of current academic interest involves identifying mechanisms capable of modulating and enhancing anomalous Hall conductivity (AHC).

Within the framework of this research, the investigators focused on investigating hexagonal close-packed cobalt (hcp-Co) to evaluate how elastic strain influences the electronic characteristics and transport properties of the material. By combining the first-principles simulation method (ab initio) with a tight-binding computational model, the research team analysed the quantum physical mechanisms associated with variations in anomalous Hall conductivity under mechanical strain.

The findings demonstrate that the anomalous Hall conductivity of hcp-Co can be adjusted via elastic strain within a range from -2% to +2%. The AHC value reaches a maximum at a compressive strain of -0.5%, exhibiting a variation of up to 24% compared to the pristine state. Computational results indicate that this modification relates to the shift of energy band anti-crossing points closer to the Fermi level, which alters the Berry curvature distribution and directly affects the anomalous Hall conductivity of the material.

Alongside these scientific outcomes, the project successfully delivered the academic products and training objectives originally set forth. The research group developed an anomalous Hall conductivity (AHC) calculation module integrated into the bphase programme, published a scientific paper entitled “Tuning the Anomalous Hall Conductivity of hcp-Cobalt by Constant-Volume Biaxial Strain� in a journal within the IEEJ Transactions system, and contributed to postgraduate education by supervising one Master’s student to completion.

The outcomes of this research contribute to the scientific framework regarding the ability to control the anomalous Hall effect via mechanical strain in ferromagnetic materials. Furthermore, the work establishes an analytical approach for investigating and optimising magnetic materials to serve spintronics research.

The evaluation committee agreed that the project fulfilled all registered research contents and deliverables, whilst acknowledging the achievements in elucidating the physical mechanisms of the anomalous Hall effect in ferromagnetic materials. The committee members unanimously approved the evaluation results of the project.