3.3k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP1.4k papers
- Tohoku UniversityJP498 papers
- Kyoto UniversityJP326 papers
- RIKENJP288 papers
- The University of OsakaJP264 papers
- National Institute of Advanced Industrial Science and TechnologyJP263 papers
- Tokyo Institute of TechnologyJP250 papers
- National Institute for Materials ScienceJP237 papers
- RIKEN Center for Emergent Matter ScienceJP219 papers
- Japan Atomic Energy AgencyJP201 papers
- Nagoya UniversityJP194 papers
- Institute for Materials Research, Tohoku University176 papers
30 papers · 2 filters
Concomitant enhancement of longitudinal spin Seebeck effect with thermal conductivity
Ryo Iguchi, Ken-ichi Uchida, Shunsuke Daimon +1
We report a simultaneous measurement of a longitudinal spin Seebeck effect (LSSE) and thermal conductivity in a Pt/ (YIG)/Pt system in a temperature range…
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…
Comparison of device structures for the dielectric breakdown measurement of hexagonal boron nitride
Yoshiaki Hattori, Takashi Taniguchi, Kenji Watanabe +1
Improving the film quality in the synthesis of large-area hexagonal boron nitride films (h-BN) for two-dimensional material devices remains a great challenge. The measurement of el…
Experimental detection of active defects in few layers MoS2 through random telegraphic signals analysis observed in its FET characteristics
Nan Fang, Kosuke Nagashio, Akira Toriumi
Transition-metal dichalcogenides (TMDs), such as molybdenum disulfide (MoS2), are expected to be promising for next generation device applications. The existence of sulfur vacancie…
Representation of compounds for machine-learning prediction of physical properties
Atsuto Seko, Hiroyuki Hayashi, Keita Nakayama +2
The representations of a compound, called "descriptors" or "features", play an essential role in constructing a machine-learning model of its physical properties. In this study, we…
Electric Properties of Dirac Fermions Captured into 3D Nanoporous Graphene Networks
Yoichi Tanabe, Yoshikazu Ito, Katsuaki Sugawara +12
Graphene, as a promising material of post-silicon electronics, opens a new paradigm for the novel electronic properties and device applications. On the other hand, the 2D feature o…
Time-resolved photoemission apparatus achieving sub-20-meV energy resolution and high stability
Y. Ishida, T. Togashi, K. Yamamoto +5
The paper describes a time- and angle-resolved photoemission apparatus consisting of a hemispherical analyzer and a pulsed laser source. We demonstrate 1.48-eV pump and 5.90-eV pro…
Cluster multipole theory for anomalous Hall effect in antiferromagnets
Michi-To Suzuki, Takashi Koretsune, Masayuki Ochi +1
We introduce a cluster extension of multipole moments to discuss the anomalous Hall effect (AHE) in both ferromagnetic (FM) and antiferromagnetic (AFM) states in a unified framewor…
Observation of spin-polarized bands and domain-dependent Fermi arcs in polar Weyl semimetal MoTe
M. Sakano, M. S. Bahramy, H. Tsuji +9
We investigate the surface electronic structures of polar 1T'-MoTe2, the Weyl semimetal candidate realized through the nonpolar-polar structural phase transition, by utilizing the…
Buffer Layer Engineering on Graphene via Various Oxidation Methods for Atomic Layer Deposition
Nobuaki Takahashi, Kosuke Nagashio
The integration of high-k oxide on graphene using atomic layer deposition requires an electrically reliable buffer layer. In this study, Y was selected as the buffer layer due to t…
Anisotropic Dielectric Breakdown Strength of Single Crystal Hexagonal Boron Nitride
Yoshiaki Hattori, Takashi Taniguchi, Kenji Watanabe +1
Dielectric breakdown has historically been of great interest from the perspectives of fundamental physics and electrical reliability. However, to date, the anisotropy in the dielec…
New p- and n-type ferromagnetic semiconductors: Cr-doped BaZn2As2
Bo Gu, Sadamichi Maekawa
We find new ferromagnetic semiconductors, Cr-doped BaZn2As2, by employing a combined method of the density functional theory and the quantum Monte Carlo simulation. Due to a narrow…
Designing nanostructures for interfacial phonon transport via Bayesian optimization
Shenghong Ju, Takuma Shiga, Lei Feng +3
We demonstrate optimization of thermal conductance across nanostructures by developing a method combining atomistic Green's function and Bayesian optimization. With an aim to minim…
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…
Measurement of spin pumping voltage separated from extrinsic microwave effects
Ryo Iguchi, Eiji Saitoh
Conversions between spin and charge currents are core technologies in recent spintronics. In this article, we provide methods for estimating inverse spin Hall effects (ISHEs) induc…
Magnon Polarons in the Spin Seebeck Effect
Takashi Kikkawa, Ka Shen, Benedetta Flebus +5
Sharp structures in magnetic field-dependent spin Seebeck effect (SSE) voltages of Pt/YFeO (YIG) at low temperatures are attributed to the magnon-phonon interact…
Asymmetric Pt/Co/Pt structure as a platform for extracting pure spin Hall torque
Hongyu An, Hiroyasu Nakayama, Yusuke Kanno +3
We have quantitatively studied the spin-orbit torque purely generated by the spin Hall effect in a wide range of temperatures by intensionally eliminating the Rashba spin-orbit tor…
Electronic structure and phase transition in polar ScFeO3 from First Principles Calculations
Bog G. Kim, M. Toyoda, Janghee Park +1
The properties of newly discovered polar ScFeO3 with magnetic ordering are examined using Ab initio calculations and symmetry mode analysis. The GGA+U calculation confirms the stab…
Monte Carlo analysis for finite temperature magnetism of NdFeB permanent magnet
Yuta Toga, Munehisa Matsumoto, Seiji Miyashita +4
We investigate the effects of magnetic inhomogeneities and thermal fluctuations on the magnetic properties of a rare earth intermetallic compound, NdFeB. The constrained…
Thermoelectric generation based on spin Seebeck effects
Ken-ichi Uchida, Hiroto Adachi, Takashi Kikkawa +5
The spin Seebeck effect (SSE) refers to the generation of a spin current as a result of a temperature gradient in magnetic materials including insulators. The SSE is applicable to…
Thermoelectric performance of spin Seebeck effect in Fe3O4/Pt-based thin film heterostructures
R. Ramos, A. Anadon, I. Lucas +6
We report a systematic study on the thermoelectric performance of spin Seebeck devices based on Fe3O4/Pt junction systems. We explore two types of device geometries: a spin Hall th…
Universal scaling for the spin-electricity conversion on surface states of topological insulators
K. T. Yamamoto, Y. Shiomi, Kouji Segawa +2
We have investigated spin-electricity conversion on surface states of bulk-insulating topological insulator (TI) materials using a spin pumping technique. The sample structure is N…
Iterative diagonalization of the non-Hermitian transcorrelated Hamiltonian using a plane-wave basis set: Application to -electron systems with deep core states
Masayuki Ochi, Yoshiyuki Yamamoto, Ryotaro Arita +1
We develop an iterative diagonalization scheme in solving a one-body self-consistent-field equation in the transcorrelated (TC) method using a plane-wave basis set. Non-Hermiticity…
Revealing the ultrafast light-to-matter energy conversion before heat diffusion in a layered Dirac semimetal
Y. Ishida, H. Masuda, H. Sakai +2
There is still no general consensus on how one can describe the out-of-equilibrium phenomena in matter induced by an ultrashort light pulse. We investigate the pulse-induced dynami…