Composite Fermions with a Warped Fermi Contour

M. A. Mueed; D. Kamburov; Yang Liu; M. Shayegan; L. N. Pfeiffer; K. W. West; K. W. Baldwin; R. Winkler

doi:10.1103/PhysRevLett.114.176805

Composite Fermions with a Warped Fermi Contour

M. A. Mueed, D. Kamburov, Yang Liu, M. Shayegan, L. N. Pfeiffer, K. W. West, K. W. Baldwin, R. Winkler

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Abstract

Via measurements of commensurability features near the Landau filling factor v=1/2, we probe the shape of the Fermi contour for hole-flux composite fermions confined to a wide GaAs quantum well. The data reveal that the composite fermions are strongly influenced by the characteristics of the Landau level in which they are formed. In particular, their Fermi contour is warped when their Landau level originates from a hole band with significant warping.

Original language	English (US)
Article number	176805
Journal	Physical review letters
Volume	114
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.114.176805
State	Published - Apr 29 2015

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.114.176805

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AU - Liu, Yang

AU - Shayegan, M.

AU - Pfeiffer, L. N.

AU - West, K. W.

AU - Baldwin, K. W.

AU - Winkler, R.

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Composite Fermions with a Warped Fermi Contour

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All Science Journal Classification (ASJC) codes

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