Strongly anisotropic electronic transport in higher Landau levels

R. R. Du, W. Pan, H. L. Stormer, D. C. Tsui, L. N. Pfeiffer, K. W. Baldwin, K. W. West

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


Low-temperature, electronic transport in higher Landau levels (N>1) in a two-dimensional electron system is strongly anisotropic. At half-filling of either spin level of such Landau levels (v = 9/2, 11/2, 13/2, 15/2, etc.) the magnetoresistance either collapses to form a deep minimum or is peaked in a sharp maximum, depending on the in-plane current direction. The anisotropic axis can be reoriented by applying an in-plane magnetic field of approximately 1-2 T strength. The magnetoresistance at v = 5/2 and v = 7/2 (N = 1) is initially isotropic but an in-plane field induces a strong anisotropy. Our observations are strong evidence for a new many-electron phase in higher Landau levels, which forms spontaneously or can be induced by an in-plane field.

Original languageEnglish (US)
Pages (from-to)36-39
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number1
StatePublished - Feb 2000
Externally publishedYes
Event13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) - Ottawa, Ont, Can
Duration: Aug 1 1999Aug 6 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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