Phys. Rev. B 65, 241313(R) (2002) [4 pages]Onset of anisotropic transport of two-dimensional electrons in high Landau levels: Possible isotropic-to-nematic liquid-crystal phase transition
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‖ is applied. Under these conditions we find that the longitudinal resistivity scales quasilinearly with B‖/T. These observations support the notion that the onset of anisotropy at B‖=0 does not reflect the spontaneous development of charge density modulations but may instead signal an isotropic-to-nematic liquid-crystal phase transition. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.65.241313
DOI:
10.1103/PhysRevB.65.241313
PACS:
73.43.Qt, 73.20.Qt, 73.63.Hs
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