Experimental evidence for the formation of stripe phases in Si/SiGe

Details Experimental evidence for the formation of stripe phases in Si/SiGe Experimental evidence for the formation of stripe phases in Si/SiGe

2000-07-10

arxiv.org/abs/cond-mat/0007148v1

Phys. Rev. Lett. 86 (5), 866 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.86.866

We observe pronounced transport anisotropies in magneto-transport 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 1 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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