Q-Valley Quasiparticle Interference in Few-Layer Transition Metal Dichalcogenides
ORAL
Abstract
Quantum transport experiments have provided compelling evidence for the threefold flavors of the Q-valley electrons in few-layer transition metal dichalcogenides (TMD). We study the quasiparticle interference (QPI) due to Q-valley electrons scattering off localized impurities, which modifies the local density of states. In the quantum Hall regime, all the TMD odd-layers thicker than bilayer exhibit Landau level triplets. When a Landau level triplet is one-third filled or empty, the flavor SU(3) symmetry is broken in the ferroelectric nematic ground states tunable by an in-plane electric field and an out-of-plane magnetic field. We show the QPI patterns of such flavor states, which can be probed by scanning tunneling spectroscopy.
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Presenters
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Patrick Cheung
University of Texas at Dallas
Authors
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Patrick Cheung
University of Texas at Dallas
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Yan-Feng Zhou
University of Texas at Dallas
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Fan Zhang
University of Texas at Dallas, University of Texas, Dallas, Department of Physics, The University of Texas at Dallas, Department of Physics, University of Texas at Dallas, The University of Texas at Dallas, The Univerisity of Texas at Dallas