K. Hasegawa, Y. Hibino, T. Koyama, D. Chiba. Tunable unidirectional spin Hall magnetoresistance in ferrimagnetic CoGd films. Physical Review B. 2025. 111. 2
T. Morita, T. Koyama, D. Chiba. Process gas dependence of spin-orbit torque in Pt/NiO/Co structures. Applied Physics Letters. 2023. 122. 26
Takeaki Gokita, Ryota Nagira, Taiga Torii, Tomohiro Koyama, Daichi Chiba. Modulation of perpendicular magnetic anisotropy in CoFeB/MgO structure by an application of biaxial tensile strain. Applied Physics Express. 2023. 16. 6. 063001-063001
Hayato Mizuno, Takahiro Moriyama, Kensho Tanaka, Masashi Kawaguhi, Tomohiro Koyama, Daichi CHIBA, Teruo ONO. Electric field effect on spectroscopic g-factor and magnetic anisotropy in a Pt/Co/MgO ultrathin film. Japanese Journal of Applied Physics. 2022
Toshiaki Morita, Kento Hasegawa, Tomohiro Koyama, Daichi Chiba. Modulation of spin-orbit torque by insertion of a NiO layer in a Pt/Co structure formed on Al2O3 and Si/SiO x substrate. Japanese Journal of Applied Physics. 2022. 61. 7. 070908-070908