Mott transitions in the multi-orbital systems
Akihisa Koga, Norio Kawakami, T. M. Rice, Manfred Sigrist
Abstract
We investigate the Mott transitions in the two-orbital Hubbard model with different bandwidths. By combining dynamical mean field theory with the exact diagonalization, we discuss the stability of itinerant quasi-particle states in each band. We demonstrate that separate Mott transitions occur at different Coulomb interaction strengths in general, which merge to a single transition only under special conditions. In particular, it is clarified that the xy and pair-hopping components of the Hund coupling play a key role to control the nature of the Mott transitions.
Create a lesson
Related papers
Disorder-Induced Griffiths like Phase and Charge Localization in Sr2FeRuO6
Koustav Pal, Shuvendu Ghosh, I. Das
Interplay of electric field and electronic correlations in pairing competition in bilayer nickelates
Yanmei Cai, Yicheng Xiong, Ying Liang et al.
Beyond Kitaev exchange: Γ'-driven magnetism in Ag3LiRh2O6
Efrain Insuasti Pazmino, Shi Feng, Ramesh Dhakal et al.
Role of Gd 5d-Au 5d hybridization for the magnetic properties of Au-Al-Gd quasicrystal approximants
Goro Nozue, Hidenori Fujiwara, Satoru Hamamoto et al.
Room-Temperature Metallic 2D Ferromagnetism Stabilized by Quantum Metric
Teng-Fei Ying, Jianqi Zhong, Songyuan Geng et al.
Multiple Superconducting Phases under Pressure for Different Field Directions in UTe2
Dai Aoki, Atsushi Miyake, Ai Nakamura et al.