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.

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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