Competing orders at the interface of a bilayer Weyl system with Fermi arcs

ORAL

Abstract

We study interaction effects at the interface of two Weyl semimetals, each with multiple Fermi arc states on their surfaces. We consider competing spontaneous orderings in the ground-state, in particular charge density and inter-surface exciton condensation. The resulting phases offer rich physics which can depend strongly on the relative orientation of the Fermi arcs.

*RK aknowledges support from Gov. of India for support under PMRF scheme. RM aknowledges support from CSIR (Gov. of India). HF aknowledges support by Spain’s MINECO Grants No. PGC2018-097018-B-100, the US NSF, the US-Israel Binational Science Foundation and by the Research Corporation for Science Advancement through a Cottrell SEED Award. AK aknowledges support from SERB (Gov. of India) through grant ECR/2018/001443, BRNS (Gov. of India) support through grant 58/20/15/2019-BRNS, and MHRD (Gov. of India) under SPARC scheme. We also aknowledge the use of the HPC facility at IIT Kanpur.

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Presenters

  • Ritajit Kundu

    • Indian Institute of Technology Kanpur (IIT)

Authors

  • Ritajit Kundu

    • Indian Institute of Technology Kanpur (IIT)

  • Rohit Mukherjee

    • Indian Institute of Technology Kanpur (IIT)

  • Herb Fertig

    • Indiana Univ - Bloomington
    • Physics, Indiana University, Bloomington

  • Arijit Kundu

    • Indian Institute of Technology Kanpur (IIT)
    • Indian Inst of Tech-Kanpur