Density-induced interchange of anisotropy axes at half-filled high Landau levels

J. Zhu, W. Pan, L. N. Pfeiffer, K. W. West, H. L. Stormer

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The density-induced 90° rotations of the anisotropy axes in two dimensional electron gases (2DEG) at half-filled high Landau levels were studied. A tunable density heterostructure insulated gate field effect transistor (HIGFET) was used to calculate the transition density and observe hysteresis in the vicinity of the transition. A density-induced reorientation of the stripe state at v = 9/2 was observed. The low density orientation of the stripes was stabilized by an in-plane magnetic field applied along either anisotropy axis.

Original languageEnglish (US)
Article number116803
Pages (from-to)1168031-1168034
Number of pages4
JournalPhysical review letters
Issue number11
StatePublished - Mar 18 2002

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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