40 citations · 91 across the 20 of their papers we have counts for
15 papers · 1 filter
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…
Spin Seebeck effect in magnetic junctions with a compensated ferrimagnet
Xin Theng Lee, Takahiro Misawa, Mamoru Matsuo +1
Compensated ferrimagnets enable ferromagnet-like spin transport without net magnetization. We study the spin Seebeck effect in a compensated ferrimagnet/normal-metal junction using…
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…
Torsional oscillation of carbon nanotubes driven by electron spins
Koji Yamada, Wataru Izumida, Mamoru Matsuo +1
We theoretically investigate the current-induced excitation of torsional vibrations in a suspended carbon nanotube (CNT) quantum dot. By considering a CNT clamped between half-meta…
Spin Current Generation Controlled by the Néel State in a Compensated Ferrimagnet
Xin Theng Lee, Takahiro Misawa, Mamoru Matsuo +1
Compensated ferrimagnets, which break sublattice and time-reversal symmetries in the ground state, exhibit an isotropic ferromagnet-like spin splitting despite a vanishing net magn…
Theory of spin Seebeck effect activated by acoustic chiral phonons
Naoki Nishimura, Takumi Funato, Mamoru Matsuo +1
We theoretically explore the generation of spin current driven by a temperature gradient in a junction between a chiral insulator and a normal metal. Based on the gyromagnetic resp…
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 spin pumping and inverse Rashba-Edelstein effect in a two-dimensional electron gas
Masaki Yama, Mamoru Matsuo, Takeo Kato
We theoretically investigate spin transport in a junction system composed of a ferromagnetic insulator (FI) and a two-dimensional electron gas (2DEG) with both Rashba and Dresselha…
Spin pumping into quantum spin nematic states
Takuto Ishikawa, Wolfgang Belzig, Takeo Kato
We theoretically study spin pumping into a spin-nematic state in a junction system composed of a ferromagnetic insulator and a spin-nematic insulator, described by using the spin-1…
Microscopic theory of Rashba-Edelstein magnetoresistance
Masaki Yama, Mamoru Matsuo, Takeo Kato
We theoretically study Rashba-Edelstein magnetoresistance (REMR) in a two-dimensional electron gas (2DEG) system with Rashba and Dresselhaus spin-orbit interactions. We consider a…
Fluctuations in Spin Dynamics Excited by Pulsed Light
Tetsuya Sato, Shinichi Watanabe, Mamoru Matsuo +1
We theoretically investigate nonequilibrium spin fluctuations in a ferromagnet induced by a light pulse. Using a Lindblad equation consistent with the Landau-Lifshitz-Gilbert equat…
Theory of the inverse Rashba-Edelstein effect induced by thermal spin injection
Kaiji Hosokawa, Masaki Yama, Mamoru Matsuo +1
We theoretically consider a junction composed of a ferromagnetic insulator (FI) and a two-dimensional electron gas (2DEG) with Rashba- and Dresselhaus-type spin-orbit interactions.…
Chirality-induced spin selectivity by variable-range hopping along DNA double helix
Ryotaro Sano, Takeo Kato
We here present a variable-range hopping model to describe the chirality-induced spin selectivity along the DNA double helix. In this model, DNA is considered as a one-dimensional…
Chirality-induced Phonon-Spin Conversion at an Interface
Takumi Funato, Mamoru Matsuo, Takeo Kato
We consider spin injection driven by nonequilibrium chiral phonons from a chiral insulator into an adjacent metal. Phonon-spin conversion arises from the coupling of the electron s…
Decoherence in a superconducting flux qubit with a pi-junction
T. Kato, A. A. Golubov, Y. Nakamura
We consider the use of a pi-junction for flux qubits to realize degenerate quantum levels without external magnetic field. On the basis of the Caldeira-Leggett model, we derive an…