130 citations · 490 across the 30 of their papers we have counts for
30 papers
Single-orbital tight-binding model for chiral one-dimensional hybrid organic-inorganic lead halide perovskites
Yuya Ominato, Tetsuya Furukawa, Ayumi Ishii +1
We present a single-orbital tight-binding model for the low-energy electronic states of the chiral one-dimensional hybrid organic-inorganic lead halide perovskite $\mathrm{(}R/S\ma…
Spin Peltier effect in graphene
Xin Theng Lee, Xin Hu, Yuya Ominato +3
In this work, we theoretically investigate the spin-Peltier effect in a heterostructure composed of graphene and a ferromagnetic insulator (FI). Using a microscopic formalism based…
Circular dichroism in second- and third-harmonic generation in chiral topological semimetal CoSi
Yuya Ominato, Masahito Mochizuki
We theoretically investigate circular dichroism (CD) in second- and third-harmonic generation (SHG and THG) in the chiral topological semimetal CoSi. We demonstrate that both SHG a…
Ferromagnetic resonance modulation in topological materials with bulk--boundary coexistence
Shun Muto, Yuya Ominato, Takeo Kato +2
We extend ferromagnetic resonance (FMR) modulation theory to describe systems in which bulk and boundary states of topological materials coexist, with both appearing at the same en…
Probing valley quantum oscillations via the spin Seebeck effect in transition metal dichalcogenide/ferromagnet hybrids
Xin Hu, Yuya Ominato, Mamoru Matsuo
We theoretically investigate spin-valley-locked tunneling transport in a transition-metal dichalcogenide/ferromagnetic-insulator heterostructure under a perpendicular magnetic fiel…
Quantum oscillations of valley current driven by microwave irradiation in transition-metal dichalcogenide/ferromagnet hybrids
Xin Hu, Yuya Ominato, Mamoru Matsuo
We theoretically study spin and valley transport in a transition-metal dichalcogenide(TMDC)/ferromagnet heterostructure under a perpendicular magnetic field. We find that microwave…
Spin Pumping into two-dimensional systems
Yuya Ominato, Masaki Yama, Ai Yamakage +2
In this review, we present recent theoretical developments on spin transport phenomena probed by ferromagnetic resonance (FMR) modulation in two-dimensional systems coupled to magn…
Theory of Photocurrent and High-Harmonic Generation with Chiral Fermions
Yuya Ominato, Masahito Mochizuki
We theoretically discover possible dc-current induction and high-harmonic generation from photodriven chiral fermions in B20-type semimetals irradiated with circularly polarized li…
Thermomagnetic anomalies in quantum magnon transport caused by tunable junction geometries in cold atomic systems
Yuta Sekino, Yuya Ominato, Hiroyuki Tajima +2
We study magnon-driven spin and heat transport in a magnetic linear junction (MLJ) formed by two ferromagnets in optical lattices linked via linearly aligned bonds. Using the Schwi…
Spin Seebeck Effect in Graphene
Xin Hu, Yuya Ominato, Mamoru Matsuo
We develop a microscopic theory of the spin Seebeck effect (SSE) at the interface of a bilayer system of a ferromagnetic insulator and graphene. We compare the tunneling spin curre…
Thermomagnetic Anomalies by Magnonic Criticality in Ultracold Atomic Transport
Yuta Sekino, Yuya Ominato, Hiroyuki Tajima +2
We investigate thermomagnetic transport in an ultracold atomic system with two ferromagnets linked via a magnetic quantum point contact. Using nonequilibrium Green's function appro…
Dynamical Majorana Ising spin response in a topological superconductor-magnet hybrid by microwave irradiation
Yuya Ominato, Ai Yamakage, Mamoru Matsuo
We study a dynamical spin response of surface Majorana modes in a topological superconductor-magnet hybrid under microwave irradiation. We find a method to toggle between dissipati…
Spin pumping effect in non-Fermi liquid metals
Xiao-Tian Zhang, Yi-Hui Xing, Xu-Ping Yao +3
Spin pumping effect is a sensitive and well-established experimental method in two-dimensional (2D) magnetic materials. We propose that spin pumping effect can be a valuable probe…
Acousto-magnonic spin Hall effect in honeycomb antiferromagnets
Ryotaro Sano, Yuya Ominato, Mamoru Matsuo
The recently discovered van der Waals antiferromagnets have suffered from the lack of a comprehensive method to study their magnetic properties. Here, we propose a dissipationless…
Ferromagnetic resonance modulation in -wave superconductor/ferromagnetic insulator bilayer systems
Yuya Ominato, Ai Yamakage, Takeo Kato +1
We investigate ferromagnetic resonance (FMR) modulation in -wave superconductor (SC)/ferromagnetic insulator (FI) bilayer systems theoretically. The modulation of the Gilbert da…
Valley transport driven by dynamic lattice distortion
Yuya Ominato, Daigo Oue, Mamoru Matsuo
Angular momentum conversion between mechanical rotation and the valley degree of freedom in 2D Dirac materials is investigated theoretically. Coupling between the valley and vortic…
Anisotropic superconducting spin transport at magnetic interfaces
Yuya Ominato, Ai Yamakage, Mamoru Matsuo
We present a theoretical investigation of anisotropic superconducting spin transport at a magnetic interface between a p-wave superconductor and a ferromagnetic insulator. Our form…
Valley-dependent spin transport in monolayer transition-metal dichalcogenides
Yuya Ominato, Junji Fujimoto, Mamoru Matsuo
We study valley-dependent spin transport theoretically in monolayer transition-metal dichalcogenides in which a variety of spin and valley physics are expected because of spin-vall…
Quantum Oscillations of Gilbert Damping in Ferromagnetic/Graphene Bilayer Systems
Yuya Ominato, Mamoru Matsuo
We study the spin dynamics of a ferromagnetic insulator on which graphene is placed. We show that the Gilbert damping is enhanced by the proximity exchange coupling at the interfac…
Phase diagram of a magnetic topological nodal semimetal: Stable nodal line in an easy-plane ferromagnet
Yuya Ominato, Ai Yamakage, Kentaro Nomura
We study a topological phase diagram of a ferromagnetic topological nodal semimetal. We consider a lattice model for three-dimensional topological insulators with ferromagnetic ord…
Electric polarization in magnetic topological nodal semimetal thin films
Yuya Ominato, Ai Yamakage, Kentaro Nomura
We theoretically study the electric polarization in magnetic topological nodal semimetal thin films. In magnetically doped topological insulators, topological nodal semimetal phase…
Spin-orbit crossed susceptibility in topological Dirac semimetals
Yuya Ominato, Shuta Tatsumi, Kentaro Nomura
We theoretically study the spin-orbit crossed susceptibility of topological Dirac semimetals. Because of strong spin-orbit coupling, the orbital motion of electrons is modulated by…
Helicity-protected domain-wall magnetoresistance in ferromagnetic Weyl semimetal
Koji Kobayashi, Yuya Ominato, Kentaro Nomura
The magnetotransport properties of disordered ferromagnetic Weyl semimetals are investigated numerically. We found an extraordinarily stable and huge magnetoresistance effect in do…
Spin susceptibility of three-dimensional Dirac semimetals
Yuya Ominato, Kentaro Nomura
We theoretically study the spin susceptibility of Dirac semimetals using the linear response theory. The spin susceptibility is decomposed into an intraband contribution and an int…