Y
Yasuhiro Niimi
Researcher at Osaka University
Publications - 81
Citations - 3282
Yasuhiro Niimi is an academic researcher from Osaka University. The author has contributed to research in topics: Spin Hall effect & Spin-½. The author has an hindex of 23, co-authored 77 publications receiving 2874 citations. Previous affiliations of Yasuhiro Niimi include University of Tokyo & Tohoku University.
Papers
More filters
Journal ArticleDOI
Scanning tunneling microscopy and spectroscopy of the electronic local density of states of graphite surfaces near monoatomic step edges
TL;DR: In this paper, the authors measured the electronic local density of states (LDOS) of graphite surfaces near monoatomic step edges, which consist of either the zigzag or armchair edge, with the scanning tunneling microscopy (STM) and spectroscopy techniques.
Journal ArticleDOI
Indication of intrinsic spin Hall effect in 4d and 5d transition metals
M. Morota,Yasuhiro Niimi,Kohei Ohnishi,Dahai Wei,T. Tanaka,Hiroshi Kontani,Takashi Kimura,Yoshichika Otani +7 more
TL;DR: In this paper, the spin Hall effects in 4$d$ and 5€d$ transition metals, Nb, Ta, Mo, Pd, and Pt, were investigated by incorporating the spin absorption method in the lateral spin valve structure.
Journal ArticleDOI
Giant Spin Hall Effect Induced by Skew Scattering from Bismuth Impurities inside Thin Film CuBi Alloys
Yasuhiro Niimi,Y. Kawanishi,Dahai Wei,Cyrile Deranlot,Hongxin Yang,Mairbek Chshiev,Thierry Valet,Albert Fert,Yoshichika Otani +8 more
TL;DR: It is demonstrated that a giant spin Hall effect (SHE) can be induced by introducing a small amount of Bi impurities in Cu by applying the resonant scattering model proposed by Fert and Levy to 6p impurities.
Journal ArticleDOI
Tuning the spin Hall effect of Pt from the moderately dirty to the superclean regime
Edurne Sagasta,Yasumoto Omori,Miren Isasa,Martin Gradhand,Luis E. Hueso,Yasuhiro Niimi,Yasuhiro Niimi,Yoshichika Otani,Fèlix Casanova +8 more
TL;DR: In this paper, the authors systematically study Pt, the prototypical spin Hall effect material, using the spin absorption method and find a single intrinsic spin Hall conductivity in a wide range of Pt conductivities, in good agreement with theory.
Journal ArticleDOI
Extrinsic Spin Hall Effect Induced by Iridium Impurities in Copper
Yasuhiro Niimi,M. Morota,Dahai Wei,Cyrile Deranlot,Mario Basletić,Amir Hamzić,Albert Fert,Yoshichika Otani +7 more
TL;DR: The extrinsic spin Hall effect induced by Ir impurities in Cu is studied by injecting a pure spin current into a CuIr wire from a lateral spin valve structure and the spin Hall resistivity of CuIr increases linearly with the impurity concentration.