Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Higuchi, Masahiko"'
Publikováno v:
Physical Review B 108, 125132 2023
In this study, we conducted a numerical investigation on the Hall conductance ($\sigma_{Hall}$) of graphene based on the magnetic energy band structure calculated using a nonperturbative magnetic-field-containing relativistic tight-binding approximat
Externí odkaz:
http://arxiv.org/abs/2309.03444
Autor:
Higuchi, Katsuhiko, Higuchi, Masahiko
We show that the current-density functional theory for superconductors (sc-CDFT) can describe the magnetic-field-induced first-order phase transition of aluminum from a superconducting state to a normal state. This is accomplished by introducing a mo
Externí odkaz:
http://arxiv.org/abs/2209.00298
We present the second-order phase transition from a band insulator to metal that is induced by a strong magnetic field. The magnetic-field dependences of the magnetization and energy band gap of a crystalline silicon immersed in a magnetic field are
Externí odkaz:
http://arxiv.org/abs/2208.14690
A non-perturbative relativistic tight-binding (TB) approximation method applicable to crystalline material immersed in a magnetic field was developed in 2015. To apply this method to any material in the magnetic field, the electronic structure of the
Externí odkaz:
http://arxiv.org/abs/2204.06836
Publikováno v:
Phys. Rev. B 110, 205131 (2024)
The anomalous velocity has been derived so far based on the single-band approximation. In this paper, the anomalous velocity is derived accounting for multiple energy bands. It is shown that when multiple energy bands are considered, the anomalous ve
Externí odkaz:
http://arxiv.org/abs/2202.07810
Autor:
Higuchi, Katsuhiko, Higuchi, Masahiko
We present the explicit forms of the maximum eigenvalue and the corresponding eigenfunction for the second-order reduced density matrix (RDM2) of the BCS superconducting state (SS). Using these quantities, we deal with two topics in the present paper
Externí odkaz:
http://arxiv.org/abs/2107.06486
Graphene is a highly promising material in the field of spin electronics. Recent experiments on electron spin resonance have observed a reduction in the g-factor of graphene. In our previous paper [J. Phys. Soc. Jpn. 88, 094707 (2019)], we demonstrat
Externí odkaz:
http://arxiv.org/abs/2010.10815
Autor:
Higuchi, Katsuhiko, Higuchi, Masahiko
We present the current-density functional theory for the superconductor immersed in the magnetic field. The order parameter of the superconducting state, transverse component of the paramagnetic current-density, and electron density are chosen as bas
Externí odkaz:
http://arxiv.org/abs/1610.00109
Autor:
Higuchi, Masahiko, Higuchi, Katsuhiko
Publikováno v:
Phys. Rev. B 95, 195153 (2017)
Magnetic properties of metals are investigated through electronic structure calculations based on the recently-proposed magnetic-field-containing relativistic tight-binding approximation (MFRTB) method [Phys. Rev. B \textbf{91}, 075122 (2015)]. It is
Externí odkaz:
http://arxiv.org/abs/1609.07194
Autor:
Higuchi, Katsuhiko, Higuchi, Masahiko
Publikováno v:
J. Phys. Soc. Jpn. 86, 064704/1-11 (2017)
We show that the diagonal elements of the second-order reduced density matrix (RDM2) can be chosen as basic variables for describing the superconducting state, instead of the off-diagonal elements of the RDM2 that are usually adopted as basic variabl
Externí odkaz:
http://arxiv.org/abs/1512.07775