Anomalous Nematic States in High Half-Filled Landau Levels

X. Fu; Q. Shi; M. A. Zudov; G. C. Gardner; J. D. Watson; M. J. Manfra; K. W. Baldwin; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevLett.124.067601

Anomalous Nematic States in High Half-Filled Landau Levels

X. Fu, Q. Shi, M. A. Zudov, G. C. Gardner, J. D. Watson, M. J. Manfra, K. W. Baldwin, L. N. Pfeiffer, K. W. West

Physics and Astronomy (Twin Cities)

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7 Scopus citations

Abstract

It is well established that the ground states of a two-dimensional electron gas with half-filled high (N≥2) Landau levels are compressible charge-ordered states, known as quantum Hall stripe (QHS) phases. The generic features of QHSs are a maximum (minimum) in a longitudinal resistance Rxx (Ryy) and a nonquantized Hall resistance RH. Here, we report on emergent minima (maxima) in Rxx (Ryy) and plateaulike features in RH in half-filled N≥3 Landau levels. Remarkably, these unexpected features develop at temperatures considerably lower than the onset temperature of QHSs, suggestive of a new ground state.

Original language	English (US)
Article number	067601
Journal	Physical review letters
Volume	124
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.124.067601
State	Published - Feb 14 2020

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© 2020 American Physical Society.

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abstract = "It is well established that the ground states of a two-dimensional electron gas with half-filled high (N≥2) Landau levels are compressible charge-ordered states, known as quantum Hall stripe (QHS) phases. The generic features of QHSs are a maximum (minimum) in a longitudinal resistance Rxx (Ryy) and a nonquantized Hall resistance RH. Here, we report on emergent minima (maxima) in Rxx (Ryy) and plateaulike features in RH in half-filled N≥3 Landau levels. Remarkably, these unexpected features develop at temperatures considerably lower than the onset temperature of QHSs, suggestive of a new ground state.",

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AU - Fu, X.

AU - Shi, Q.

AU - Zudov, M. A.

AU - Gardner, G. C.

AU - Watson, J. D.

AU - Manfra, M. J.

AU - Baldwin, K. W.

AU - Pfeiffer, L. N.

AU - West, K. W.

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Anomalous Nematic States in High Half-Filled Landau Levels

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