34 citations · 88 across the 12 of their papers we have counts for
12 papers
Magnetic Weyl semimetals: Interplay of band topology and magnetism
Akihiro Ozawa, Yasufumi Araki, Koji Kobayashi +1
We review recent theoretical and experimental developments in magnetic Weyl semimetals, focusing on the electromagnetic responses emerging from the interplay of their electronic ba…
Intrinsic spin Nernst effect in topological Dirac and magnetic Weyl semimetals
Taiki Matsushita, Akihiro Ozawa, Yasufumi Araki +2
We investigate the intrinsic spin Nernst effect (SNE), a transverse spin current induced by temperature gradients, in topological Dirac semimetals (TDSMs) and magnetic Weyl semimet…
Topological Spin-Orbit Torque in Ferrimagnetic Weyl Semimetal
Tomonari Meguro, Akihiro Ozawa, Koji Kobayashi +2
The spin-orbit torque (SOT) in a compensated ferrimagnetic Weyl semimetal, , is studied by the linear response theory. We elucidate that the SOT driven by a…
Chiral gauge field in fully-spin polarized Weyl semimetal with magnetic domain walls
Akihiro Ozawa, Yasufumi Araki, Kentaro Nomura
Modulation of magnetization in magnetic Weyl semimetals leads to the shift of Weyl points in momentum space, which effectively serves as the chirality-dependent gauge field for the…
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…
Light-induced anomalous Hall conductivity in massive 3D Dirac semimetal CoSnS
Naotaka Yoshikawa, Shun Okumura, Yoshua Hirai +10
Weyl semimetals can emerge from Dirac semimetals when the time-reversal or spatial-inversion symmetries are broken. Recently, it has been proposed based on the Floquet theory that…
Enhancement of Spin-Charge Conversion Efficiency for CoSnS across Transition from Paramagnetic to Ferromagnetic Phase
Takeshi Seki, Yong-Chang Lau, Junya Ikeda +5
CoSnS (CSS) is one of the shandite compounds and becomes a magnetic Weyl semimetal candidate below the ferromagnetic phase transition temperature ($\textit{T}_\te…
Intercorrelated anomalous Hall and spin Hall effect in kagome-lattice CoSnS-based shandite films
Yong-Chang Lau, Junya Ikeda, Kohei Fujiwara +5
Magnetic Weyl semimetals (mWSMs) are characterized by linearly dispersive bands with chiral Weyl node pairs associated with broken time reversal symmetry. One of the hallmarks of m…
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…
Self-consistent Analysis of Doping Effect for Magnetic Ordering in Stacked-Kagome Weyl System
Akihiro Ozawa, Kentaro Nomura
We theoretically study the carrier doping effect for magnetism in a stacked-kagome system based on an effective model and the Hartree-Fock method. We show…
Two-orbital effective model for magnetic Weyl semimetal in Kagome-lattice shandite
Akihiro Ozawa, Kentaro Nomura
We construct a two-orbital effective model for a ferromagnetic Kagome-lattice shandite, , a candidate material of magnetic Weyl semimetals, by considering o…