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92 papers · 1 filter
Electron Correlation Induced Spontaneous Symmetry Breaking and Weyl Semimetal Phase in a Strongly Spin-Orbit Coupled System
Akihiko Sekine, Kentaro Nomura
We study theoretically the electron correlation effect in a three-dimensional Dirac fermion system which describes a topologically nontrivial state. It is shown within the mean-fie…
Polar Charge Fluctuation and Superconductivity in Organic Conductor
Akihiko Sekine, Joji Nasu, Sumio Ishihara
Superconductivity and polar charge fluctuation are studied in an organic conductor with the dimer-molecule degree of freedom. The extended Hubbard models, where the intra-dimer ele…
Collapsing three-dimensional closed Alexandrov spaces with a lower curvature bound
Ayato Mitsuishi, Takao Yamaguchi
In the present paper, we determine the topologies of three-dimensional closed Alexandrov spaces which converge to lower dimensional spaces in the Gromov-Hausdorff topology.
Single-molecule stochastic resonance
K. Hayashi, S. de Lorenzo, M. Manosas +2
Stochastic resonance (SR) is a well known phenomenon in dynamical systems. It consists of the amplification and optimization of the response of a system assisted by stochastic nois…
Characterization of InSb quantum wells with atomic layer deposited gate dielectrics
M. M. Uddin, H. W. Liu, K. F. Yang +4
We report magnetotransport measurements of a gated InSb quantum well (QW) with high quality Al2O3 dielectrics (40 nm thick) grown by atomic layer deposition. The magnetoresistance…
Observation of momentum space semi-localization in Si-doped -GaO
P. Richard, T. Sato, S. Souma +7
We performed an angle-resolved photoemission spectroscopy study of Si-doped -GaO. We observed very small photoemission intensity near the Fermi level corresponding to no…