J Freezing and Hund's Rules in Spin-Orbit-Coupled Multiorbital Hubbard Models

Aaram J. Kim, Harald Olaf Jeschke, Philipp Werner, Roser Valentí

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We investigate the phase diagram of the spin-orbit-coupled three orbital Hubbard model at arbitrary filling by means of dynamical mean-field theory combined with the continuous-time quantum Monte Carlo method. We find that the spin-freezing crossover occurring in the metallic phase of the nonrelativistic multiorbital Hubbard model can be generalized to a J-freezing crossover, with J=L+S, in the spin-orbit-coupled case. In the J-frozen regime the correlated electrons exhibit a nontrivial flavor selectivity and energy dependence. Furthermore, in the regions near n=2 and n=4 the metallic states are qualitatively different from each other, which reflects the atomic Hund's third rule. Finally, we explore the appearance of magnetic order from exciton condensation at n=4 and discuss the relevance of our results for real materials.

Original languageEnglish
Article number086401
JournalPhysical Review Letters
Volume118
Issue number8
DOIs
Publication statusPublished - Feb 21 2017
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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