172 citations · 497 across the 22 of their papers we have counts for
22 papers
Effective model analysis of intrinsic spin Hall effect with magnetism in stacked-kagome Weyl semimetal Co3Sn2S2
Akihiro Ozawa, Koji Kobayashi, Kentaro Nomura
We theoretically study the spin Hall effect in a simple tight-binding model of stacked-kagome Weyl semimetal Co3Sn2S2 with ferromagnetic ordering. We focus on the two types of the…
Effective Tight-Binding Model of Compensated Ferrimagnetic Weyl Semimetal with Spontaneous Orbital Magnetization
Tomonari Meguro, Akihiro Ozawa, Koji Kobayashi +1
The effective tight-binding model with compensated ferrimagnetic inverse-Heusler lattice TiMnAl, candidate material of magnetic Weyl semimetal, is proposed. The energy spectr…
Magnetic orderings from spin-orbit coupled electrons on kagome lattice
Jin Watanabe, Yasufumi Araki, Koji Kobayashi +2
We investigate magnetic orderings on kagome lattice numerically from the tight-binding Hamiltonian of electrons, governed by the filling factor and spin-orbit coupling (SOC) of ele…
Wannier-based implementation of the coherent potential approximation with applications to Fe-based transition-metal alloys
Naohiro Ito, Takuya Nomoto, Koji Kobayashi +5
We develop a formulation of the coherent potential approximation (CPA) on the basis of the Wannier representation to develop a computationally efficient method for the treatment of…
Intrinsic and extrinsic anomalous Hall effects in disordered magnetic Weyl semimetal
Koji Kobayashi, Kentaro Nomura
We study the intrinsic and extrinsic Hall effects in disordered magnetic Weyl semimetals numerically. We show that in Weyl metals, where the Fermi energy deviates from the Weyl poi…
Quantum Hall effect induced by chiral Landau levels in topological semimetal films
D. -H. -Minh Nguyen, Koji Kobayashi, Jan-Erik R. Wichmann +1
Motivated by recent transport experiments, we theoretically study the quantum Hall effect in topological semimetal films. Owing to the confinement effect, the bulk subbands origina…