Observation of an Anisotropic Wigner Crystal

Yang Liu, S. Hasdemir, L. N. Pfeiffer, K. W. West, K. W. Baldwin, M. Shayegan

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We report a new correlated phase of two-dimensional charged carriers in high magnetic fields, manifested by an anisotropic insulating behavior at low temperatures. It appears in a large range of low Landau level fillings 1/3ν 2/3 in hole systems confined to wide GaAs quantum wells when the sample is tilted in magnetic field to an intermediate angle. The parallel field component (B) leads to a crossing of the lowest two Landau levels, and an elongated hole wave function in the direction of B. Under these conditions, the in-plane resistance exhibits an insulating behavior, with the resistance along B about 10 times smaller than the resistance perpendicular to B. We interpret this anisotropic insulating phase as a two-component, striped Wigner crystal.

Original languageEnglish (US)
Article number106802
JournalPhysical review letters
Issue number10
StatePublished - Aug 30 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Liu, Y., Hasdemir, S., Pfeiffer, L. N., West, K. W., Baldwin, K. W., & Shayegan, M. (2016). Observation of an Anisotropic Wigner Crystal. Physical review letters, 117(10), [106802]. https://doi.org/10.1103/PhysRevLett.117.106802