207 citations · 958 across the 36 of their papers we have counts for
7 papers · 1 filter
Voltage-Controlled Magnonic Spin Tunneling Junction
Kohei Ohgane, Yuta Yahagi, Daisuke Miura +1
We theoretically investigate the effective exchange interaction, , mediated by conductive electrons within a nonmagnetic metal spacer, in the presence of a bias vol…
Tunable Spin Seebeck Diode with Magnonic Spin Tunneling Junction
Diasuke Miura, Akimasa Sakuma
We theoretically investigate the spin--wave spin current induced by the spin Seebeck effect in magnonic spin tunneling junctions (MSTJs) for arbitrary magnetization directions. We…
First-principles study on interface magnetic structure in NdFeB/(Fe,Co) exchange spring magnets
Nobuyuki Umetsu, Yuta Toga, Akimassa Sakuma
The magnetic properties of NdFeB (NFB)/transition metal (TM = Fe, Co) multilayer systems are studied on the basis of first-principles density functional calculations…
Microscopic Theory of Magnon-Drag Thermoelectric Transport in Ferromagnetic Metals
Daisuke Miura, Akimasa Sakuma
A theoretical study of the magnon-drag Peltier and Seebeck effects in ferromagnetic metals is presented. A magnon heat current is described perturbatively from the microscopic view…
Charge and Spin Transport in Magnetic Tunnel Junctions: Microscopic Theory
Daisuke Miura, Akimasa Sakuma
We study the charge and spin currents passing through a magnetic tunnel junction (MTJ) on the basis of a tight-binding model. The currents are evaluated perturbatively with respect…
Spin-Atomic Vibration Interaction and Spin-Flip Hamiltonian of a Single Atomic Spin in a Crystal Field
Satoshi Kokado, Kikuo Harigaya, Akimasa Sakuma
We derive the spin-atomic vibration interaction and the spin-flip Hamiltonian of a single atomic spin in a crystal field. We here apply the perturbation t…
Theoretical study of a localized quantum spin reversal by the sequential injection of spins in a spin quantum dot
Satoshi Kokado, Kazumasa Ueda, Kikuo Harigaya +1
This is a theoretical study of the reversal of a localized quantum spin induced by sequential injection of spins for a spin quantum dot that has a quantum spin. The system consists…