arXiv 0803.15782008-03cond-mat.mes-hallcond-mat.str-el

Metastable anisotropy orientation of nematic quantum Hall fluids

Daniel G. Barci, Zochil González Arenas

备注：: 10 pages, 8 figures, final version as will appear in PRB
发表信息：: Phys. Rev. B 78, 085303 (2008)
DOI：: 10.1103/PhysRevB.78.085303

英文摘要：

We analyze the experimental observation of metastable anisotropy resistance orientation at half filled quantum Hall fluids by means of a model of a quantum nematic liquid in an explicit symmetry breaking potential. We interpret the observed ``rotation'' of the anisotropy axis as a process of nucleation of nematic domains and compute the nucleation rate within this model. By comparing with experiment, we are able to predict the critical radius of nematic bubbles, $R_c\sim 2.6 μm $. Each domain contains about $10^4$ electrons.

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