Two-dimensional conductors with interactions and disorder from particle-vortex duality

ORAL

Abstract

We study Dirac fermions in two spatial dimensions (2D) coupled to strongly fluctuating U(1) gauge fields in the presence of quenched disorder. Such systems are dual to theories of free Dirac fermions, which are vortices of the original theory. In analogy to superconductivity, when these fermionic vortices localize, the original system becomes a perfect conductor, and when the vortices possess a finite conductivity, the original fermions do as well. We provide several realizations of this principle and thereby introduce new examples of strongly interacting 2D metals that evade Anderson localization.

*UCR Academic Senate.
NSF grant Nos. PHY-1607611, PHY-1125915, DMR- 1725401, DGE- 1144245.
DOE Office of Basic Energy Sciences, contract DE-AC02- 76SF00515.
CONICET, PIP grant 11220150100299, ANPCYT PICT grant 2015-1224, CNEA.

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Presenters

  • Hart Goldman

    • University of Illinois at Urbana-Champaign
    • Physics, Univ of Illinois - Urbana

Authors

  • Hart Goldman

    • University of Illinois at Urbana-Champaign
    • Physics, Univ of Illinois - Urbana

  • Michael Mulligan

    • Physics and Astronomy, Univ of California - Riverside
    • University of California-Riverside
    • Physics, University of California Riverside
    • Physics and Astronomy, University of California - Riverside

  • Srinivas Raghu

    • Physics, Stanford Univ
    • Stanford University
    • Stanford Univ
    • Department of Physics, Stanford University

  • Gonzalo Torroba

    • Centro Atomico Bariloche and CONICET

  • Max Zimet

    • Stanford University