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arXiv · 1704.03428

Apparent temperature-induced reorientation of quantum Hall stripes

Q. Shi·M. A. Zudov·B. Friess·J. Smet·J. D. Watson·G. C. Gardner·M. J. Manfra
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Abstract

Our magnetotransport measurements of quantum Hall stripes in a high-quality GaAs quantum well in a slightly tilted magnetic field reveal that the orientation of stripes can be changed by temperature. Field-cooling and field-warming measurements, as well as observation of hysteresis at intermediate temperatures allow us to conclude that the observed temperature-induced reorientation of stripes is owing to the existence of two distinct minima in the symmetry-breaking potential. We also find that the native symmetry-breaking mechanism does not depend on temperature and that low-temperature magnetotransport data should be treated with caution as they do not necessarily reveal the true ground state, even in the absence of hysteresis.

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Q. Shi, M. A. Zudov, B. Friess, J. Smet, J. D. Watson, G. C. Gardner, M. J. Manfra. 2017-04-11. Apparent temperature-induced reorientation of quantum Hall stripes. https://doi.org/10.1103/physrevb.95.161404

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