8 papers
Spherical-tensor description of the Jahn--Teller--Hubbard molecule and local electron--phonon entanglement
Koichiro Takahashi, Shuichiro Ebata, Naotaka Yoshinaga +1
We investigate the localized-electron character of the Mott-insulating phase in AC using a single-site multiorbital electron model coupled to anisotropic molecular vibra…
Semiclassical representation of the Hubbard model
Yuki Yamasaki, Hidemaro Suwa, Cristian D. Batista +1
By revisiting the path-integral formulation of the Hubbard model, we propose a theoretical approach based on a semiclassical approximation employing an unconventional coherent-stat…
Designing XY and Dzyaloshinskii--Moriya couplings in Majorana Cooper pair boxes
Manato Teranishi, Shintaro Hoshino, Ai Yamakage
We theoretically study how to design spin couplings in networks of Majorana Cooper pair boxes (MCBs) connected by multiple normal-metal leads. The inter-box interaction is generate…
Nonlinear planar Hall effect from superconducting vortex motion
Mio Hashimoto, Takako Konoike, Tomoki Kobayashi +6
We report the nonreciprocal charge transport along the longitudinal and transverse directions in the vortex flow regime of FeSe superconducting films. Clear nonreciprocal signals u…
Symmetry-breaking perturbations in the Jahn-Teller-Hubbard model
Natsuki Okada, Tatsuya Miki, Yusuke Nomura +2
We study the effect of symmetry-breaking perturbations in the multiorbital Hubbard model coupled to anisotropic Jahn-Teller phonons, which is relevant for the description of fuller…
Weak coupling approach to magnetic and orbital susceptibilities for superconducting states in multiorbital electron-phonon coupled model
Natsuki Okada, Tatsuya Miki, Shintaro Hoshino
Alkali-doped fullerides are molecular-based superconductors with multiple active orbitals. In this paper, using the Eliashberg theory with the retardation effect of Jahn-Teller pho…