Renormalization group study of superconductivity and intervalley coherence in the rhombohedral trilayer graphene

ORAL

Abstract

Recent experiments on rhombohedral trilayer graphene (RTG) observe the superconductivity and isospin symmetry breaking. In this work, we study the fate of the fermion interactions which originates from the microscopic model of this RTG system using the renormalization group (RG) method. We build the hotspot model based on the fermi surface nesting and the proximity to the van Hove singularities. We derived the renormalization group equations for the momentum-dependent interaction vertices, and we investigated the effect of Hund's coupling and the Berry curvature in the RG flow.

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Presenters

  • Dachuan Lu

    • University of California, San Diego

Authors

  • Dachuan Lu

    • University of California, San Diego

  • Taige Wang

    • University of California, Berkeley

  • Shubhayu Chatterjee

    • UC Berkeley
    • University of California, Berkeley

  • Michael P Zaletel

    • University of California, Berkeley
    • University of California at Berkeley

  • Yizhuang You

    • University of California, San Diego
    • Harvard University