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Time, momentum, energy resolved pump probe tunneling spectroscopy of the nonequilibrium electrons in a Landau level (part2)

ORAL

Abstract

We use time, momentum, and energy resolved pump probe tunneling spectroscopy (Tr-MERTS) to study the nonequilibrium electronic states in a quantum Hall system. Our Tr-MERTS spectra show the slow relaxation of the spin polarized electrons in a ferromagnetic quantum Hall state at \nu = 1. In addition, the spectra reveal a transient splitting with a lifetime of a few microseconds that appears when a small number of electrons is pumped into the \nu = 1 state. Our results demonstrate a potential broad applicability of Tr-MERTS for studying the nonequilibrium physics in unconventional quantum Hall states or other flat-band systems realized in two-dimensional materials.

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Presenters

  • Heun Mo Yoo

    Massachusetts Institute of Technology MIT

Authors

  • Heun Mo Yoo

    Massachusetts Institute of Technology MIT

  • Ken W. West

    Princeton University, Princeton Institute for the Science and Technology of Materials (PRISM), Princeton University, Department of Electrical Engineering, Princeton University, Electrical Engineering, Princeton, Electrical Engineering, Princeton University, Princeton

  • Kirk Baldwin

    Princeton Institute for the Science and Technology of Materials (PRISM), Princeton University, Princeton University, Department of Electrical Engineering, Princeton University, Electrical Engineering, Princeton, Electrical Engineering, Princeton University

  • Loren Pfeiffer

    Princeton University, Princeton Institute for the Science and Technology of Materials (PRISM), Princeton University, Department of Electrical Engineering, Princeton University, Electrical Engineering, Princeton, Electrical Engineering, Princeton University, Princeton

  • Raymond Ashoori

    Massachusetts Institute of Technology MIT, Physics, Massachusetts Institute of Technology