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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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 languageEnglish (US)
Article number067601
JournalPhysical review letters
Issue number6
StatePublished - Feb 14 2020

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    Fu, X., Shi, Q., Zudov, M. A., Gardner, G. C., Watson, J. D., Manfra, M. J., Baldwin, K. W., Pfeiffer, L. N., & West, K. W. (2020). Anomalous Nematic States in High Half-Filled Landau Levels. Physical review letters, 124(6), [067601].