978 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Kyoto UniversityJP223 papers
- The University of TokyoJP53 papers
- The University of OsakaJP48 papers
- Kyoto Bunkyo UniversityJP45 papers
- Tohoku UniversityJP29 papers
- Japan Science and Technology AgencyJP26 papers
- Brookhaven National LaboratoryUS19 papers
- High Energy Accelerator Research OrganizationJP18 papers
- National Institute of Advanced Industrial Science and TechnologyJP18 papers
- Spintronics Research Network of JapanJP16 papers
- Korea Advanced Institute of Science and TechnologyKR13 papers
- Tokyo Institute of TechnologyJP13 papers
67 papers · 1 filter
Fermi-liquid behavior and characteristic temperature-dependent susceptibility in clean RuO crystal
Shubhankar Paul, Atsutoshi Ikeda, Hisakazu Matsuki +6
The magnetic nature of the altermagnet candidate RuO remains under debate. It has been recently shown from quantum oscillations and angle-resolved photoemission spectroscopy (A…
Anomalous Nernst effect in Co thin films under laser irradiation
Soichiro Mochizuki, Itaru Sugiura, Tetsuya Narushima +3
The anomalous Nernst effect (ANE) generates electromotive forces transverse to temperature gradients and has attracted much attention for potential applications into alternative th…
All-optical helicity-dependent switching in NiCoO thin films
Ryunosuke Takahashi, Yann Le Guen, Suguru Nakata +8
All-optical switching (AOS) involves manipulating magnetization using only pulsed laser, presenting a promising approach for next-generation magnetic recording devices. NiCo2O4 (NC…
Optical Cooling of Dot-in-crystal Halide Perovskites: Challenges of Nonlinear Exciton Recombination
Yasuhiro Yamada, Takeru Oki, Takeshi Morita +5
Highly efficient anti-Stokes (AS) photoluminescence (PL) is observed from halide perovskite quantum dots (QDs) due to their strong electron-phonon interactions. The AS PL is partic…
Gigantic Anisotropy of Self-Induced Spin-Orbit Torque in Weyl Ferromagnet Co2MnGa
Motomi Aoki, Yuefeng Yin, Simon Granville +6
Spin-orbit torque (SOT) is receiving tremendous attention from both fundamental and application-oriented aspects. Co2MnGa, a Weyl ferromagnet that is in a class of topological quan…
Ultrafast spin-to-charge conversions of antiferromagnetic (111)-oriented -
Huiling Mao, Yuta Sasaki, Yuta Kobayashi +5
Antiferromagnetic - combines outstanding spin-transport properties with magnons in the terahertz (THz) frequency range. However, the THz radiation e…
All-optical nanoscale thermometry based on silicon-vacancy centers in detonation nanodiamonds
Masanori Fujiwara, Gaku Uchida, Izuru Ohki +5
Silicon-vacancy (SiV) centers in diamond are a promising candidate for all-optical nanoscale high-sensitivity thermometry because they have sufficient sensitivity to reach the subk…
n-Type diamond synthesized with tert-butylphosphine for long spin coherence times of perfectly aligned NV centers
Riku Kawase, Hiroyuki Kawashima, Hiromitsu Kato +5
The longest spin coherence times for nitrogen-vacancy (NV) centers at room temperature have been achieved in phosphorus-doped n-type diamond. However, difficulty controlling impuri…
Anti-Stokes Photoluminescence from CsPbBr3 Nanostructures Embedded in a CsPbBr Crystal
Yuto Kajino, Shuji Otake, Takumi Yamada +6
Lead halide perovskites possess high photoluminescence (PL) efficiency and strong electron-phonon interactions, and therefore the optical cooling using up-conversion PL has been ex…
Optically-induced magnetization switching in NiCo2O4 thin films using ultrafast lasers
Ryunosuke Takahashi, Takuo Ohkochi, Daisuke Kan +2
Recently, all-optical magnetization control has been garnering considerable attention in realizing next-generation ultrafast magnetic information devices. Here, employing a magneto…
The Anomalous Formation of Irradiation Induced Nitrogen-Vacancy Centers in 5-Nanometer-Sized Detonation Nanodiamonds
Frederick T. -K. So, Alexander I. Shames, Daiki Terada +11
Nanodiamonds containing negatively charged nitrogen-vacancy (NV) centers are versatile room-temperature quantum sensors in a growing field of research. Yet, knowledge regarding…
Slow oxidation of magnetite nanoparticles elucidates the limits of the Verwey transition
Taehun Kim, Sangwoo Sim, Sumin Lim +8
Magnetite (Fe3O4) is of fundamental importance as the original magnetic material and also for the Verwey transition near T_V = 125 K, below which a complex lattice distortion and e…
Ultrafast demagnetization in NiCo2O4 thin films probed by time-resolved microscopy
Ryunosuke Takahashi, Yoshiki Tani, Hirotaka Abe +5
Using a time-resolved magneto-optical Kerr effect (TR-MOKE) microscope, we observed ultrafast demagnetization of inverse-spinel-type NiCo2O4 (NCO) epitaxial thin films of the inver…
Spin reorientation in tetragonally distorted spinel oxide NiCoO epitaxial films
Hiroki Koizumi, Ikumi Suzuki, Daisuke Kan +4
We experimentally investigated the magnetic properties of NiCoO epitaxial films known to be conductive oxides with perpendicular magnetic anisotropy (PMA) at room temperatu…
Shallow NV centers augmented by exploiting n-type diamond
A. Watanabe, T. Nishikawa, H. Kato +6
Creation of nitrogen-vacancy (NV) centers at the nanoscale surface region in diamond, while retaining their excellent spin and optical properties, is essential for applications in…
High-order harmonic generation in graphene: nonlinear coupling of intra and interband transitions
Shunsuke A. Sato, Hideki Hirori, Yasuyuki Sanari +2
We investigate high-order harmonic generation (HHG) in graphene with a quantum master equation approach. The simulations reproduce the observed enhancement in HHG in graphene under…
Spin and orbital magnetic moments in perpendicularly magnetized NiCoO epitaxial thin films: Effects of site-dependent cation valence states
Daisuke Kan, Masaichiro Mizumaki, Miho Kitamura +5
We carried out x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD) spectroscopy and investigated cation valence states and spin and orbital magnetic mo…
Polaron Masses in CH3NH3PbX3 Perovskites Determined by Landau Level Spectroscopy in Low Magnetic Fields
Yasuhiro Yamada, Hirofumi Mino, Takuya Kawahara +3
We investigate the electron-phonon coupling in CH3NH3PbX3 lead halide perovskites through the observation of Landau levels and high-order excitons at weak magnetic fields, where th…
Temperature dependence of magnetic resonance in ferrimagnetic GdFeCo alloys
Takaya Okuno, Se Kwon Kim, Takahiro Moriyama +10
We provide a macroscopic theory and experimental results for magnetic resonances of antiferromagnetically-coupled ferrimagnets. Our theory, which interpolates the dynamics of antif…
Spin wave propagation in ferrimagnetic
Shinsaku Funada, Tomoe Nishimura, Yoichi Shiota +4
Recent advances in antiferromagnetic spin dynamics using rare-earth (RE) and transition-metal (TM) ferrimagnets have attracted much interest for spintronic devices with a high spee…
Spin-transfer torques for domain walls in antiferromagnetically coupled ferrimagnets
Takaya Okuno, Duck-Ho Kim, Se-Hyeok Oh +13
Antiferromagnetic materials are outstanding candidates for next generation spintronic applications, because their ultrafast spin dynamics makes it possible to realize several order…
Efficient all-optical helicity dependent switching of spins in a Pt/Co/Pt film by a dual-pulse excitation
Kihiro T. Yamada, Alexey V. Kimel, Kiran Horabail Prabhakara +7
All-optical helicity dependent switching (AO-HDS), deterministic control of magnetization by circularly polarized laser pulses, allows to efficiently manipulate spins without the n…
Choking non-local magnetic damping in exchange biased ferromagnets
Takahiro Moriyama, Kent Oda, Teruo Ono
We investigated the temperature dependence of the magnetic damping in the exchange biased Pt/ Fe50Mn50 /Fe20Ni80 /SiOx multilayers. In samples having a strong exchange bias, we obs…
An alternative to the topological interpretation of the transverse resistivity anomalies in SrRuO3
Daisuke Kan, Takahiro Moriyama, Kento Kobayashi +1
We clarify the physical origin of anomalies in transverse resistivity often observed in exotic materials, such as SrRuO3, in which the Berry curvature is manifested in the transpor…