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arXiv · 2002.03964

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
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Abstract

It is well established that the ground states of a two-dimensional electron gas with half-filled high ($N \ge 2$) 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 $R_{xx}$ ($R_{yy}$) and a non-quantized Hall resistance $R_H$. Here, we report on emergent minima (maxima) in $R_{xx}$ ($R_{yy}$) and plateau-like features in $R_H$ in half-filled $N \ge 3$ Landau levels. Remarkably, these unexpected features develop at temperatures considerably lower than the onset temperature of QHSs, suggesting a new ground state.

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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. 2020-02-10. Anomalous Nematic States in High Half-Filled Landau Levels. https://doi.org/10.1103/physrevlett.124.067601

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