Correlation-Enhanced Quantized Charge Pumping

ORAL

Abstract

We investigate charge pumping in the vicinity of order-obstructed topological phases. To explore this, we study a prototypical Su-Schreiffer-Heefer model with non-local interaction that gives rise to orbital charge density wave order, and characterize the impact of this order on the model’s topological properties. In the ordered phase, where the many-body topological invariant loses quantization, we find that not only is quantized chage pumping possible, it is assisted by the collective nature of the orbital charge density wave order.

*Supported by the U.S. Depart- ment of Energy (DOE), Office of Basic Energy Sciences, Di- vision of Materials Sciences and Engineering, under contract DE-AC02-76SF00515.

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Presenters

  • Jacob Marks

    • Physics Department, Stanford University
    • Quantum, X - The Moonshot Factory

Authors

  • Jacob Marks

    • Physics Department, Stanford University
    • Quantum, X - The Moonshot Factory

  • Michael Schüler

    • Stanford Institute for Materials and Energy Science (SIMES), Stanford University

  • Jan Budich

    • Physics, TU Dresden
    • Technical University Dresden
    • Institute of Theoretical Physics, Technische Universitaet Dresden

  • Thomas Devereaux

    • Stanford Univ
    • Materials Science and Engineering, Stanford University
    • Stanford University
    • SLAC National Accelerator Laboratory
    • Photon Sciences, Stanford Linear Accelerator (SLAC)
    • SIMES, SLAC
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
    • SLAC National Accelerator Lab.