34 citations · 120 across the 8 of their papers we have counts for
8 papers
Observation of Terahertz Spin Hall Conductivity Spectrum in GaAs with Optical Spin Injection
Tomohiro Fujimoto, Takayuki Kurihara, Yuta Murotani +7
We report the first observation of the spin Hall conductivity spectrum in GaAs at room temperature. Our terahertz polarimetry with a precision of several rads resolves the Farad…
Disentangling the Competing Mechanisms of Light-Induced Anomalous Hall Conductivity in Three-Dimensional Dirac Semimetal
Yuta Murotani, Natsuki Kanda, Tomohiro Fujimoto +7
We experimentally elucidate the origin of the anomalous Hall conductivity in a three-dimensional Dirac semimetal, CdAs, driven by circularly polarized light. Using time-res…
Termination of Graphene Edges Created by Hydrogen and Deuterium Plasmas
Taisuke Ochi, Masahiro Kamada, Takamoto Yokosawa +3
Edge engineering is important for both fundamental research and applications as the device size decreases to nanometer scale. This is especially the case for graphene because a gra…
Stimulated Rayleigh Scattering Enhanced by a Longitudinal Plasma Mode in a Periodically Driven Dirac Semimetal CdAs
Yuta Murotani, Natsuki Kanda, Tatsuhiko N. Ikeda +6
Using broadband (12-45 THz) multi-terahertz spectroscopy, we show that stimulated Rayleigh scattering dominates the transient optical conductivity of cadmium arsenide, a Dirac semi…
Tracking ultrafast change of multiterahertz broadband response functions in a photoexcited Dirac semimetal CdAs thin film
Natsuki Kanda, Yuta Murotani, Takuya Matsuda +5
The electromagnetic response of Dirac semimetals in the infrared and terahertz frequency ranges is attracting growing interest for potential applications in optoelectronics and non…
Emergence of Nearly Flat Bands through an Embedded Kagome Lattice in an Epitaxial Two-dimensional Ge Layer on ZrB2(0001)
Antoine Fleurence, Chi-Cheng Lee, Rainer Friedlein +8
Ge atoms segregating on zirconium diboride thin films grown on Ge(111) were found to crystallize into a two-dimensional bitriangular structure which was recently predicted to be a…
Single-particle excitation of core states in epitaxial silicene
Chi-Cheng Lee, Jun Yoshinobu, Kozo Mukai +6
Recent studies of core-level X-ray photoelectron spectroscopy (XPS) spectra of silicene on ZrB(0001) were found to be inconsistent with the density of states (DOS) of a planar-…
Direct Observation of Site-specific Valence Electronic Structure at Interface: SiO2/Si Interface
Y. Yamashita, S. Yamamoto, K. Mukai +8
Atom specific valence electronic structures at interface are elucidated successfully using soft x-ray absorption and emission spectroscopy. In order to demonstrate the versatility…