162 citations · 563 across the 17 of their papers we have counts for
17 papers
Nonreciprocity reversal of magnetoacoustic attenuation in NiFe alloy thin films
Mingran Xu, Kei Yamamoto, Kouta Kondou +8
Nonreciprocity, the asymmetry of transport, underlies technologies from the diode to the microwave isolator. In a ferromagnet, a surface acoustic wave generates an elliptical effec…
Harmonic and Subharmonic Magnon Generation in a Surface Acoustic Wave Resonator
Yunyoung Hwang, Liyang Liao, Jorge Puebla +6
We experimentally observe the generation of magnon harmonics and subharmonics in an on-chip surface acoustic wave resonator incorporating a thin CoFeB film, us…
Observation of nonreciprocal diffraction of surface acoustic wave
Yoichi Nii, Kei Yamamoto, Masaki Kanno +2
Rectification phenomenon caused by the simultaneous breaking of time reversal and spatial inversion symmetries has been extended to a wide range of (quasi)particles and waves; howe…
Strongly Coupled Spin Waves and Surface Acoustic Waves at Room Temperature
Yunyoung Hwang, Jorge Puebla, Kouta Kondou +8
Here, we report the observation of strong coupling between magnons and surface acoustic wave (SAW) phonons in a thin CoFeB film constructed in an on-chip SAW resonator by analyzing…
Valley-Selective Phonon-Magnon Scattering in Magnetoelastic Superlattices
Liyang Liao, Jorge Puebla, Kei Yamamoto +5
Phonons and magnons are engineered by periodic potential landscapes in phononic and magnonic crystals, and their combined studies may enable valley phonon transport tunable by the…
Theory of spin Peltier effect
Y. Ohnuma, M. Matsuo, S. Maekawa
A microscopic theory of the spin Peltier effect in a bilayer structure comprising a paramagnetic metal (PM) and a ferromagnetic insulator (FI) based on the nonequilibrium Green's f…
Spin transport in half-metallic ferromagnets
Y. Ohnuma, M. Matsuo, S. Maekawa
We theoretically investigate spin transport in half-metallic ferromagnets at finite temperatures. The side-jump and skew-scattering contributions to spin Hall conductivity are deri…
Fermi Surfaces and - Hybridization in the Diluted Magnetic Semiconductor BaK(ZnMn)As Studied by Soft X-ray Angle Resolved Photoemission Spectroscopy
H. Suzuki, G. Q. Zhao, K. Zhao +14
The electronic structure of the new diluted magnetic semiconductor BaK(ZnMn)As (, ) in single crystal form has been investig…
Effect of anisotropic spin absorption on the Hanle effect in lateral spin valves
H. Idzuchi, Y. Fukuma, S. Takahashi +2
We have succeeded in fully describing dynamic properties of spin current including the different spin absorption mechanism for longitudinal and transverse spins in lateral spin val…
Plasmonic generation of spin currents
Ken-ichi Uchida, Hiroto Adachi, Daisuke Kikuchi +4
Surface plasmons, free-electron collective oscillations in metallic nanostructures, provide abundant routes to manipulate light-electron interactions that can localize light energy…
Zero-Field Fiske Resonance Coupled with Spin-waves in Ferromagnetic Josephson Junctions
S. Hikino, M. Mori, S. Maekawa
AC Josephson current density in a Josephson junction with DC bias is spatially modulated by an external magnetic field, and induces an electromagnetic (EM) field inside the junctio…
Theory of the spin Hall effect, and its inverse, in a ferromagnetic metal near the Curie temperature
B. Gu, T. Ziman, S. Maekawa
We give a theory of the inverse spin Hall effect (ISHE) in ferromagnetic metals based on skew scattering via collective spin fluctuations. This extends Kondo's theory of the anomal…
The spin Hall effect as a probe of nonlinear spin fluctuations
D. H. Wei, Y. Niimi, B. Gu +3
The spin Hall effect and its inverse play key roles in spintronic devices since they allow conversion of charge currents to and from spin currents. The conversion efficiency strong…
Thermal spin pumping and magnon-phonon-mediated spin-Seebeck effect
K. Uchida, T. Ota, H. Adachi +6
The spin-Seebeck effect (SSE) in ferromagnetic metals and insulators has been investigated systematically by means of the inverse spin-Hall effect (ISHE) in paramagnetic metals. Th…
Acoustic spin pumping: Direct generation of spin currents from sound waves in Pt/Y3Fe5O12 hybrid structures
K. Uchida, H. Adachi, T. An +5
Using a Pt/Y3Fe5O12 (YIG) hybrid structure attached to a piezoelectric actuator, we demonstrate the generation of spin currents from sound waves. This "acoustic spin pumping" (ASP)…
Continuous Generation of Spinmotive Force in a Patterned Ferromagnetic Film
Yuta Yamane, Kohei Sasage, Toshu An +6
We study, both experimentally and theoretically, the generation of a dc spinmotive force. By exciting a ferromagnetic resonance of a comb-shaped ferromagnetic thin film, a continuo…
Ferromagnetic resonance with a magnetic Josephson junction
S. E. Barnes, M. Aprili, I. Petkovic +1
We show experimentally and theoretically that there is a coupling via the Aharonov-Bohm phase between the order parameter of a ferromagnet and a singlet, s-wave, Josephson supercur…