Theories for v=1/2 in Single- and Double-Layer Systems

Details Theories for v=1/2 in Single- and Double-Layer Systems Theories for v=1/2 in Single- and Double-Layer Systems

1993-05-20

arxiv.org/abs/cond-mat/9305024v1

Physics

Condensed Matter

10 pages, plain TeX, Report # HU-CMT-93H01

Scientific paper

10.1016/0039-6028(94)90850-8

Recent experiments have shown that a quantized Hall plateau can occur in double layer systems at total filling factor v=1/2, though there is no plateau at v=1/2 in a normal single layer system. For the single layer system, considerable insight has been provided by a theory based on the fermion Chern-Simons picture, where the electrons are transformed into fermions that carry two flux quanta of a Chern-Simons gauge field. A similar picture can be used to characterize ground states which have been proposed for the two layer system.

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