Superfluid stiffness of twisted multilayer graphene: Part-2

ORAL

Abstract

The variation of superfluid stiffness with temperature is conventionally used to extract superconducting pairing symmetries. However, interpretations based on temperature dependence alone is known to be challenging. As an alternate method, we explore the measurement of superfluid stiffness as a function of current bias and apply it to twisted graphene. We show that the combination of current bias and temperature provides more detailed insights into pairing symmetries and enables subtle distinctions between anisotropic gaps, nodal gaps and disorder induced behavior.

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Presenters

  • Zeyu Hao

    Harvard University

Authors

  • Zeyu Hao

    Harvard University

  • Abhishek Banerjee

    Harvard University

  • Mary Kreidel

    Harvard University

  • Isabelle Y Phinney

    Harvard University

  • Jeong Min Park

    Massachusetts Institute of Technology

  • Patrick Ledwith

    Harvard University, Harvard university

  • Andrew Zimmerman

    Harvard University

  • Robert M Westervelt

    Harvard University

  • Pablo Jarillo-Herrero

    Massachusetts Institute of Technology MI, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology

  • Pavel A Volkov

    University of Connecticut

  • Ashvin Vishwanath

    Harvard University

  • Kin Chung Fong

    Raytheon BBN Technologies, Raytheon BBN, BBN Raytheon

  • Philip Kim

    Harvard University