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14 papers · 1 filter
Effect of uniaxially anisotropic Fermi surface on the quasiparticle scattering inside a vortex core in unconventional superconductors
Yoichi Higashi, Yuki Nagai, Masahiko Machida +1
We theoretically study the dependence of the quasiparticle (QP) scattering rate on the uniaxial anisotropy of a Fermi surface with changing the magnetic field angle $α_…
Phase-Sensitive Flux-Flow resistivity in Unconventional Superconductors
Yoichi Higashi, Yuki Nagai, Masahiko Machida +1
We theoretically investigate the magnetic-field-angle dependence of the flux-flow resistivity in unconventional superconductors. Two contributions to are co…
Characterization and Suppression of Low-frequency Noise in Si/SiGe Quantum Point Contacts and Quantum Dots
K. Takeda, T. Obata, Y. Fukuoka +5
We report on the effects of a global top gate on low-frequency noise in Schottky gate-defined quantum point contacts (QPCs) and quantum dots (QDs) in a modulation-doped Si/SiGe het…
Spin Relaxation in Weak Localization Regime in Multilayer Graphene Spin Valves
Takehiro Yamaguchi, Rai Moriya, Satoru Masubuchi +2
The temperature dependence of the spin relaxation time in multilayer graphene (MLG) spin valve devices was measured using a non-local magnetoresistance (NLMR) measurement. A weak l…
Spin-Hall Conductivity and Electric Polarization in Metallic Thin Films
Xuhui Wang, Jiang Xiao, Aurelien Manchon +1
We predict theoretically that, when a normal metallic thin film (without bulk spin-orbit coupling, such as Cu or Al) is sandwiched by two insulators, two prominent effects arise du…
Cation Dependence of the Electronic States in Molecular Triangular Lattice System β'-X[Pd(dmit)_2]_2: A First-principles study
Takao Tsumuraya, Hitoshi Seo, Masahisa Tsuchiizu +2
The electronic structure of an isostructural series of molecular conductors, β'-X[Pd(dmit)_2]_2 is systematically studied by a first-principles method based on the density-function…