207 citations · 317 across the 9 of their papers we have counts for
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First Principles Calculation of Magnetocrystalline Anisotropy Energy of MnBi and MnB_{1-x}Sn_x
Akimasa Sakuma, Yuki Manabe, Yohei Kota
We calculated the magnetic anisotropy constant Ku of MnBi using a first principles approach, and obtained a negative Ku in agreeable with experimental results. Furthermore, we also…
Degree of order dependence on magnetocrystalline anisotropy in bct FeCo alloys
Yohei Kota, Akimasa Sakuma
We investigate the magnetocrystalline anisotropy (MCA) energy of tetragonal distorted FeCo alloys depending on the degree of order by first-principles electronic structure calculat…
Spin-polarized electronic structures and transport properties of Fe-Co alloys
Yohei Kota, Tomohiro Takahashi, Hiroki Tsuchiura +1
The electrical resistivities of Fe-Co alloys owing to random alloy disorder are calculated using the Kubo-Greenwood formula. The obtained electrical esistivities agree well with ex…
Ab-initio Study on the Magnetic Structures in the Ordered Mn3Pt Alloy
Yohei Kota, Hiroki Tsuchiura, Akimasa Sakuma
We study the electronic states of the magnetically ordered Mn3Pt alloy within the density functional theory. Mn3Pt has been believed that one third of Mn atoms have no magnetic mom…
Decoherence processes of a quantum two-level system coupled to a fermionic environment
Naoyoshi Yamada, Akimasa Sakuma, Hiroki Tsuchiura
We study decoherence processes of an S = 1/2 localized spin coupled to conduction band electrons in a metal or a semiconductor via an Ising-like interaction. We derive master equat…
A theoretical analysis on highly spin-polarized transport of iron nitride Fe_4N
Satoshi Kokado, Nobuhisa Fujima, Kikuo Harigaya +2
In order to propose a ferromagnet exhibiting highly spin-polarized transport, we theoretically analyzed the spin polarization ratio of the conductivity of the bulk FeN with a p…