Role of Hund's splitting in electronic phase competition in Pb1-xSnxTe | |
Article | |
关键词: TOPOLOGICAL CRYSTALLINE INSULATOR; UNCONVENTIONAL SUPERCONDUCTIVITY; SCALING THEORY; HUBBARD-MODEL; ANTIFERROMAGNETISM; SR2RUO4; | |
DOI : 10.1103/PhysRevB.96.205111 | |
来源: SCIE |
【 摘 要 】
We study the effect of Hund's splitting of repulsive interactions on electronic phase transitions in the multiorbital topological crystalline insulator Pb1-xSnx Te when the chemical potential is tuned to the vicinity of low-lying typeII Van Hove singularities. Nontrivial Berry phases associated with the Bloch states impart momentum dependence to electron interactions in the relevant band. We use a multipatch parquet renormalization-group (RG) analysis to study the competition of different electronic phases, and we find that if the dominant fixed-point interactions correspond to antiparallel spin configurations, then a chiral p-wave Fulde-Ferrell-Larkin-Ovchinnikov state is favored, otherwise none of the commonly encountered electronic instabilities occurs within the one-loop parquet RG approach.
【 授权许可】
Free