65 citations · 245 across the 11 of their papers we have counts for
11 papers
Plasmon effect on the Coulomb pseudopotential in the McMillan equation
Kazuhiro Sano, Mithuki Seo, Kohji Nakamura
We examine the Coulomb pseudopotential in the McMillan equation applying to the superconductivity of heavily doped semiconductors. Systematic calculation using the first-prin…
Symmetry of Berry and spin Berry curvatures in ferromagnetic CoPt
Guanxiong Qu, Kohji Nakamura, Masamitsu Hayashi
The intrinsic spin Hall conductivity and the anomalous Hall conductivity of ferromagnetic L1-CoPt are studied using first principle calculations of the spin Berry and Berry cur…
Magnetization direction dependent spin Hall effect in 3d ferromagnets
Guanxiong Qu, Kohji Nakamura, Masamitsu Hayashi
We have studied the intrinsic spin Hall conductivity of 3d transition metal ferromagnets using first-principles calculations. We find the spin Hall conductivity of bcc Fe and fcc N…
Tunable inverse spin Hall effect in nanometer-thick platinum films by ionic gating
Sergey Dushenko, Masaya Hokazono, Kohji Nakamura +3
Electric gating can strongly modulate a wide variety of physical properties in semiconductors and insulators, such as significant changes of conductivity in silicon, appearance of…
Enhanced perpendicular magnetocrystalline anisotropy energy in an artificial magnetic material with bulk spin-momentum coupling
Abdul-Muizz Pradipto, Kay Yakushiji, Woo Seung Ham +8
We systematically investigate the perpendicular magnetocrystalline anisotropy (MCA) in CoPt/Pd-based multilayers. Our magnetic measurement data shows that the asymmetric Co/Pd/P…
Spin Hall effect from hybridized 3-4 orbitals
Yong-Chang Lau, Hwachol Lee, Kohji Nakamura +1
Electrical manipulation of magnetization by spin-orbit torque (SOT) has shown promise for realizing reliable magnetic memories and oscillators. To date, the generation of transvers…
Microscopic Origin of Interfacial Dzyaloshinskii-Moriya Interaction
Sanghoon Kim, Kohei Ueda, Gyungchoon Go +15
Chiral spin textures at the interface between ferromagnetic and heavy nonmagnetic metals, such as Neel-type domain walls and skyrmions, have been studied intensively because of the…
Dirac fermions in Fe ultra-thin film
Xiao-Tian Zhang, Baolong Xu, Kohji Nakamura +1
We show the existence of massive Dirac fermions in electronic band structures of a few Fe atomic layers with perpendicular magnetization. Based on a tight binding model fitted to a…
Jahn-Teller driven perpendicular magnetocrystalline anisotropy in metastable Ruthenium
Dorj Odkhuu, S. H. Rhim, N. Park +2
A new metastable phase of the body-centered-tetragonal ruthenium ({\em bct}--Ru) is identified to exhibit a large perpendicular magnetocrystalline anisotropy (PMCA), whose energy,…
Canted ferromagnetism in RuSrGdCuO
K. Nakamura, A. J. Freeman
First principles calculations using the full-potential linearized augmented plane wave (FLAPW) method including intra-atomic noncollinear magnetism have been performed to determine…
First-principles calculation of exchange interaction and exchange force between magnetic Fe films
Kohji Nakamura, Hideo Hasegawa, Tamio Oguchi +3
First-principles calculations have been performed for the exchange interaction and exchange force between two magnetic Fe(100) thin films. It is shown that the magnitude of the cal…