412 citations · 1.9k across the 28 of their papers we have counts for
14 papers · 1 filter
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…
Crossover between intrinsic and temperature-assisted regimes in spin-orbit torque switching of antiferromagnetic order
Takumi Matsuo, Tomoya Higo, Daisuke Nishio-Hamane +7
Intensive studies have been made on antiferromagnets as candidate materials for next generation memory bits due to their ultrafast dynamics reaching picosecond time scales. Recent…
Observation of chiral domain walls in an octupole-ordered antiferromagnet
Moeta Tsukamoto, Zhewen Xu, Tomoya Higo +10
Spin chirality in antiferromagnets offers new opportunities for spintronics. The kagome antiferromagnet Mn3Sn is a paradigmatic material in which the antiferromagnetic order parame…
Spontaneous spin selectivity in chiral molecules at the interface
Kouta Kondou, Shinji Miwa, Daigo Miyajima
Chirality-induced spin selectivity (CISS) has been extensively studied over the past two decades. While current-induced spin polarization in chiral molecules is widely recognized a…
Current-in-plane magnetoresistance in chiral-molecule/ferromagnetic metal bilayer due to thermally induced spin polarization
Kouta Kondou, Masanobu Shiga, Shoya Sakamoto +7
We report chirality-induced current-in-plane magnetoresistance (CIP-MR) in chiral molecule/ferromagnetic metal bilayer at room temperature. The previously reported chiralityinduced…
Chirality-induced effective magnetic field in a phthalocyanine molecule
Shinji Miwa, Kouta Kondou, Shoya Sakamoto +4
Chirality in organic molecules has attracted considerable attention in the fields of chemistry, biology, and spintronics. This paper reports on perpendicular magnetization hysteres…
Electrical Manipulation of a Topological Antiferromagnetic State
Hanshen Tsai, Tomoya Higo, Kouta Kondou +9
Electrical manipulation of emergent phenomena due to nontrivial band topology is a key to realize next-generation technology using topological protection. A Weyl semimetal is a thr…
Phenomenological model for the direct and inverse Edelstein effects
Hironari Isshiki, Prasanta Muduli, Junyeon Kim +2
We have developed a phenomenological model that connects the direct and the inverse Edelstein effects. Our model implies a trade-off relation between the conversion coefficients fo…
Phase Boundary Exchange Coupling in the Mixed Magnetic Phase Regime of a Pd-doped FeRh Epilayer
J. R. Massey, K. Matsumoto, M. Strungaru +8
Spin-wave resonance measurements were performed in the mixed magnetic phase regime of a Pd-doped FeRh epilayer that appears as the first-order ferromagnetic-antiferromagnetic phase…
Clear variation of spin splitting by changing electron distribution at non-magnetic metal/Bi2O3 interfaces
Hanshen Tsai, Shutaro Karube, Kouta Kondou +3
Large spin splitting at Rashba interface, giving rise to strong spin-momentum locking, is essential for efficient spin-to-charge conversion. Recently, a Cu/Bismuth oxide (Bi2O3) in…
Important role of magnetization precession angle measurement in inverse spin Hall effect induced by spin pumping
Surbhi Gupta, Rohit Medwal, Daichi Kodama +3
Here, we investigate spin Hall angle of Pt in Ni80Fe20/Pt bilayer system by using a broadband spin pumping and inverse spin Hall effect measurement. An out-of-plane excitation geom…
Current-nonlinear Hall effect and spin-orbit torque magnetization switching in a magnetic topological insulator
K. Yasuda, A. Tsukazaki, R. Yoshimi +5
Precise estimation of spin Hall angle as well as successful maximization of spin-orbit torque (SOT) form a basis of electronic control of magnetic properties with spintronic functi…
Fermi level dependent charge-to-spin current conversion by Dirac surface state of topological insulators
K. Kondou, R. Yoshimi, A. Tsukazaki +6
The spin-momentum locking at the Dirac surface state of a topological insulator (TI) offers a distinct possibility of a highly efficient charge-to-spin current (C-S) conversion com…
Spin relaxation characteristics in Ag nanowire covered with various oxides
Shutaro Karube, Hiroshi Idzuchi, Kouta Kondou +2
We have studied spin relaxation characteristics in a Ag nanowire covered with various oxide layers of Bi2O3, Al2O3, HfO2, MgO or AgOx by using non-local spin valve structures. The…