Journal
PHYSICAL REVIEW LETTERS
Volume 86, Issue 5, Pages 866-869Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.866
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We observe pronounced transport anisotropies in magnetotransport experiments performed in the two-dimensional electron system of a Si/SiGe heterostructure. They occur when an in-plane field is used to tune two Landau levels with opposite spin to energetic coincidence. The observed anisotropies disappear drastically for temperatures above I K. We propose that our experimental findings may be caused by the formation of a unidirectional stripe phase oriented perpendicular to the in-plane field.
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