Journal Paper

• Pham Van Thuan, Ho Hoang Huy, Wentao Li, Shigeyuki Hirayama, Yushi Kato, Pham Nam Hai. Large spin Hall effect in 300 °C annealed BiSb topological insulator and perpendicularly magnetized CoFeB using oxide buffer/seed and interfacial layers on Si/SiO2 substrates, Applied Physics Letters, Vol. 128, pp. 182403, May 2026.
• Kota Ejiri, Wentao Li, Shuzo Oeda, Yun Jaeyeon, Kota Iwakura, Masaaki Tanaka, Pham Nam Hai. High-temperature ferromagnetism and large anomalous Nernst effect above room temperature in (In,Fe)Sb ferromagnetic semiconductor, Applied Physics Letters, Vol. 128, pp. 112404, Mar. 2026.
• Hajime Nishiyama, Pham Nam Hai, Tomohiro Amemiya, Shun Hashiyada, Yukio Kawano. Infrared optical constants n, κ, and absorption of topological insulator BiSb thin films determined by the reflectance-transmittance technique, Optics Letters, Vol. 51, pp. 1864, Mar. 2026.
• Hajime Nishiyama, Pham Nam Hai, Yukio Kawano. Mid-infrared photothermoelectric detector using topological insulator BiSb thin film, Optical Materials Express, Optica Publishing, Vol. 16, Issue 3, pp. 603-610, Feb. 2026.

International Conference (Reviewed)

• Hajime Nishiyama, Pham Nam Hai, Tomohiro Amemiya, Shun Hashiyada, Yukio Kawano. Optical constants (n, κ) and absorption of BiSb topological insulator in Mid-infrared region measured by RT technique, The 37th International Conference on the Physics of Semiconductors 2026, Aug. 2026.
• Pham Nam Hai, Kota Ejiri, Wentao Li, Shuzo Oeda, Yun Jaeyeon, Masaaki Tanaka. Large anomalous Nernst effect in room-temperature ferromagnetic semiconductor (In,Fe)Sb, The 37th International Conference on the Physics of Semiconductors 2026, Aug. 2026.
• Hajime Nishiyama, Pham Nam Hai, Yukio Kawano. Demonstration of MIR detector using sputter-fabricated BiSb topological insulator film, The 37th International Conference on the Physics of Semiconductors 2026, Aug. 2026.
• Pham Van Thuan, Ho Hoang Huy, Pham Nam Hai. Manufactorable BiSb top structure for ultrafast and ultralow power SOT-MRAM, 2026 IEEE Magnetics Society Summer School, June 2026.
• Pham Nam Hai. [Invited] Quantum Materials for High Performance Spin Orbit Torque Devices, ICMIT 2026, June 2026.
• Pham Nam Hai. [Invited] Topological Insulator-Based Spin-Orbit Torque Magnetic Sensor for 4Tbit/inch2 Magnetic Recording Technology, ISAMMA 2026, June 2026.
• Pham Van Thuan, Ho Hoang Huy, Li Wentao, Shigeyuki Hirayama, Yushi Kato, Pham Nam Hai. Large spin Hall effect in 300C annealed BiSb topological insulator and perpendicularly magnetized CoFeB using oxide buffer/seed and interfacial layers on Si/SiO2 substrates, Intermag 2026, Apr. 2026.
• Sho Kagami, Zhang Ruixian, Daiki Ito, Quang Le, Brian York, Cherngye Hwang, Xiaoyong Liu, Son Le, Maki Maeda, Tuo Fan, Yu Tao, Hisashi Takano, Pham Nam Hai. Giant Perpendicular Magnetic Anisotropy in Mo / Boron-rich CoFeB / MgAl2O4 Junction for p-MTJ integration to 5-7 nm CMOS Processes, Intermag 2026, Apr. 2026.
• Ho Hoang Huy, Li Wentao, Pham Van Thuan, Shigeyuki Hirayama, Yushi Kato, Pham Nam Hai. Large Spin Hall Angle in Highly-Textured Sputtered BiSb (012) Topological Insulator on Si/SiO2 Substrates Enabled by Buffer/Seed Stack, Intermag 2026, Apr. 2026.

Domestic Conference (Not reviewed / Unknown)

• Trinh Dai Hoang Long, Ho Hoang Huy, Pham Nam Hai. A new half-Heusler topological semimetal for SOT – MRAM applications with improved spin Hall conductivity and low surface roughness, The 87th JSAP Autumn Meeting 2026, Sept. 2026.
• Ho Hoang Huy, Pham Nam Hai. Highly effective and external-field-free spin-orbit torque switching of CoFeB/MgO using hybrid in-plane ferromagnet/BiSb topological insulator, The 87th JSAP Autumn Meeting 2026, Sept. 2026.
• Sho Kagami, Ohiro Fujie, Quang Le, Brian York, Cherngye Hwang, Xiaoyong Liu, Son Le, Maki Maeda, Tuo Fan, Yu Tao, Hisashi Takano, Pham Nam Hai. BEOL-Compatible Topological Semimetal YPtBi with High Spin-Orbit Torque Efficiency Enabled by Berry-Phase Monopole Engineering, The 87th JSAP Autumn Meeting 2026, Sept. 2026.
• Pham Van Thuan, Ho Hoang Huy, Pham Nam Hai. Manufacturable Top-BiSb SOT-MRAM Using a Conductive RuOx Interlayer, The 87th JSAP Autumn Meeting 2026, Sept. 2026.
• Ken Ishida, Takanori Shirokura, Pham Nam Hai. Enhanced spin Hall conductivity at high temperature in TaSi2 driven by Berry-phase monopoles, The 87th JSAP Autumn Meeting 2026, Sept. 2026.
• Min Liu, Ruixian Zhang, Quang Le, Brian York, Cherngye Hwang, Xiaoyong Liu, Xiaoyu Xu, Son Le, Maki Maeda, Tuo Fan, Yu Tao, Hisashi Takano, Pham Nam Hai. Comparison of spin Hall angles of BiSb topological insulator measured by spin accumulation, spin–orbit torque, and spin Hall magnetoresistance, The 73th JSAP Spring meeting 2026, Mar. 2026.
• Hajime Nishiyama, Pham Nam Hai, Yukio Kawano. トポロジカル絶縁体BiSbを⽤いた中⾚外検出の検証, 第73回応用物理学会春季節学術講演会, Mar. 2026.
• Hajime Nishiyama, Pham Nam Hai, Tomohiro Amemiya, 橋⾕田 俊, Yukio Kawano. RT法によるBiSbの⾚外光学定数および吸収の評価, 第73回応用物理学会春季節学術講演会, Mar. 2026.
• Pham Nam Hai, Kota Ejiri, Li Wentao, Shuzo Oeda, Yun Jaeyeon, Masaaki Tanaka. Large anomalous Nernst effect above room temperature in (In,Fe)Sb ferromagnetic semiconductor, The 73th JSAP Spring meeting 2026, Mar. 2026.
• Daiki Ito, Zhang Ruixian, Sho Kagami, Quang Le, Brian York, Cherngye Hwang, Xiaoyong Liu, Son Le, Maki Maeda, Tuo Fan, Yu Tao, Hisashi Takano, Pham Nam Hai. Giant Perpendicular Magnetic Anisotropy in Mo/CoFeB/MgAl2O4 Multilayers, The 73th JSAP Spring meeting 2026, Mar. 2026.
• Sho Kagami, Zhang Ruixian, Daiki Ito, Quang Le, Brian York, Cherngye Hwang, Xiaoyong Liu, Son Le, Maki Maeda, Tuo Fan, Yu Tao, Hisashi Takano, Pham Nam Hai. Giant Perpendicular Magnetic Anisotropy in Mo / Boron-rich CoFeB / MgAl2O4 Heterostructure for p-MTJ integration to 5-7 nm CMOS Processes, The 73th JSAP Spring meeting 2026, Mar. 2026.
• Wentao Li, Hoang Huy Ho, Xiaokun Yan, Pham Van Thuan, Shigeyuki Hirayama, Yushi Kato, Pham Nam Hai. Large Spin-Orbit Torque Induced by Highly Textured BiSb(012) Topological Insulator Deposited on Si/SiO2 Substrates Using Oxide Buffer/Seed Stack, The 73th JSAP Spring meeting 2026, Mar. 2026.
• Kota Sato, Shixuan Liang, Huy Ho-Hoang, Pham Nam Hai, Cheng Song. 層間Dzyaloshinskii–Moriya相互作⽤に起因する、スピン軌道トルク駆動ドメ インウォール運動の一⽅向性異⽅, 第73回応用物理学会春季節学術講演会, Mar. 2026.
• Shuzo Oeda, Kota Ejiri, Pham Nam Hai. Enhancement of Curie temperature in (In,Fe)Sb by step-flow growth technique, The 73th JSAP Spring meeting 2026, Mar. 2026.

Patent

• Namhai Pham, Takanori Shirokura. 磁気センサ. Patent. Registered. 国立大学法人東京科学大学, キオクシア株式会社. 2024/11/08. 特願2024-195845. 2025/01/24. 特開2025-013618. 特許第7838768号. 2026/03/24 2026.
• Namhai Pham, Huy Ho-Hoang. 磁気抵抗素子および磁気抵抗素子の製造方法、ならびに半導体装置および半導体装置の製造方法. Patent. Published. 国立大学法人東京科学大学, 日本サムスン株式会社. 2024/09/03. 特願2024-151827. 2026/03/13. 特開2026-046935. 2026.

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