92 citations · 297 across the 16 of their papers we have counts for
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Giant staggered Dzyaloshinskii-Moriya vectors emerged in synthetic antiferromagnets with spatially alternating stress
Yuuga Iwata, Kensuke Hayashi, Reiju Furumaki +3
Dzyaloshinskii-Moriya (DM) interaction is a source of chiral magnetic physics, and it manifests microstructural symmetry which could link to exotic magnetic and electronic properti…
Stability-threshold control of helicity-selective antiferromagnetic resonance
Masato Todani, Satoshi Iihama, Yuto Moritake +1
We study helicity-selective antiferromagnetic resonance in an antiferromagnetic-insulator/nonmagnetic-metal junction with sublattice-dependent damping and spin-orbit torque. By for…
Distinct memory properties in spin-wave reservoir computing based on synthetic antiferromagnet
Takumu Shinkai, Satoshi Iihama, Kensuke Hayashi +3
Spin-wave-based physical reservoir computing (RC) is a promising candidate for energy-efficient physical implementations of artificial intelligence because of its potential for nan…
Single-Shot Magnetization Reversal in Ferromagnetic Spin Valves Enabled via Heat Control
Kazuaki Ishibashi, Junta Igarashi, Alberto Anadón +7
We study laser induced ultrafast magnetization reversal in a ferromagnetic spin valve by comparing the effects of direct laser excitation and ultrashort hot electron pulses. A wedg…
Light-induced torque in ferromagnetic metals via orbital angular momentum generated by photon-helicity
Koki Nukui, Satoshi Iihama, Kazuaki Ishibashi +7
We investigated photon-helicity-induced magnetization precession in CoPt alloy thin films. In addition to field-like torque, attributable to magnetic field generation…
Different spin relaxation property observed in linearly and circularly polarized laser induced terahertz emission from Bi/Co bilayer
Kazuaki Ishibashi, Satoshi Iihama, Shigemi Mizukami
Recently, helicity-dependent photocurrent was reported in Bi single thin fi lms. It is proposed that the origin of this photocurrent is the combination of photo-spin conversion and…
Giant effective damping of octupole oscillation in an antiferromagnetic Weyl semimetal
Shinji Miwa, Satoshi Iihama, Takuya Nomoto +8
A magnetic Weyl semimetal is a recent focus of extensive research as it may exhibit large and robust transport phenomena associated with topologically protected Weyl points in mome…
Parity-controlled spin-wave excitations in synthetic antiferromagnets
A. Sud, Y. Koike, S. Iihama +3
We report in this study the current-induced-torque excitation of acoustic and optical modes in Ta/NiFe/Ru/NiFe/Ta synthetic antiferromagnet stacks grown on SiO2/Si substrates. The…
Interface-induced field-like optical spin torque in a ferromagnet/heavy metal heterostructure
Satoshi Iihama, Kazuaki Ishibashi, Shigemi Mizukami
The manipulation of magnetization in a metallic ferromagnet by using optical helicity has been much attracted attention for future opto-spintronic devices. The optical helicity ind…
Tunable magnon-magnon coupling in synthetic antiferromagnets
A. Sud, C. W. Zollitsch, A. Kamimaki +5
In this work, we study magnon-magnon coupling in synthetic antiferromagnets (SyAFs) using microwave spectroscopy at room temperature. Two distinct spin-wave modes are clearly obser…
Single-shot multi-level all-optical magnetization switching mediated by spin-polarized hot electron transport
S. Iihama, Y. Xu, M. Deb +5
All-optical ultrafast magnetization switching in magnetic material thin film without the assistance of an applied external magnetic field is being explored for future ultrafast and…
Laser-induced THz magnetization precession for a tetragonal Heusler-like nearly compensated ferrimagnet
S. Mizukami, A. Sugihara, S. Iihama +3
Laser-induced magnetization precessional dynamics was investigated in epitaxial films of MnGe, which is a tetragonal Heusler-like nearly compensated ferrimagnet. The ferromagne…