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244 papers · 1 filter
A hierarchical research by large-scale and ab initio electronic structure theories -- Si and Ge cleavage and stepped (111)-2x1 surfaces --
Takeo Hoshi, Masakazu Tanikawa, Akira Ishii
The ab initio calculation with the density functional theory and plane-wave bases is carried out for stepped Si(111)-2x1 surfaces that were predicted in a cleavage simulation by th…
Charge, Lattice, and Spin Dynamics in Photoinduced Phase Transitions from Charge-Order-Insulator to Metal in Quasi-Two-Dimensional Organic Conductors
Satoshi Miyashita, Yasuhiro Tanaka, Shinichiro Iwai +1
To elucidate different photoinduced melting dynamics of charge orders observed in quasi-two-dimensional organic conductors -(BEDT-TTF)RbZn(SCN) and -(BEDT-TTF)I…
Theory of Macroscopic Quantum Dynamics in High-Tc Josephson Junctions
Shiro Kawabata
We have theoretically investigated macroscopic quantum tunneling (MQT) and the influence of nodal quasiparticles and zero energy bound states (ZES) on MQT in s-wave/d-wave hybrid J…
Microscopic Coexistence of Ferromagnetism and Superconductivity in Single-Crystal UCoGe
Tetsuya Ohta, Taisuke Hattori, Kenji Ishida +5
Unambiguous evidence for the microscopic coexistence of ferromagnetism and superconductivity in UCoGe ( K and 0.6 K) is reported from $^…
A Single-Crystalline, Epitaxial SrTiO3 Thin-Film Transistor
Kosuke Uchida, Akira Yoshikawa, Kunihito Koumoto +3
We report herein fabrication and characterization of a thin-film transistor (TFT) using single-crystalline, epitaxial SrTiO3 film, which was grown by a pulsed laser deposition tech…
Strain-induced enhancement of electric quadrupole splitting in resistively detected nuclear magnetic resonance spectrum in quantum Hall systems
Minoru Kawamura, Tatsuya Yamashita, Hiroyuki Takahashi +4
We show electrical coherent manipulation of quadrupole-split nuclear spin states in a GaAs/AlGaAs heterostructure on the basis of the breakdown of quantum Hall effect. The electric…