Onset of anisotropic transport of two-dimensional electrons in high Landau levels: Possible isotropic-to-nematic liquid-crystal phase transition
نویسندگان
چکیده
The recently discovered anisotropy of the longitudinal resistance of two-dimensional electrons near half filling of high Landau levels is found to persist to much higher temperatures T when a large in-plane magnetic field B i is applied. Under these conditions we find that the longitudinal resistivity scales quasilinearly with B i /T . These observations support the notion that the onset of anisotropy at B i50 does not reflect the spontaneous development of charge density modulations but may instead signal an isotropic-to-nematic liquidcrystal phase transition.
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