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Composite Fermions with a Warped Fermi Contour

Author(s): Mueed, MA; Kamburov, D; Liu, Yang; Shayegan, Mansour; Pfeiffer, LN; et al

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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.
Publication Date: Apr-2015
Electronic Publication Date: 29-Apr-2015
Citation: Mueed, MA, Kamburov, D, Liu, Yang, Shayegan, M, Pfeiffer, LN, West, KW, Baldwin, KW, Winkler, R. (2015). Composite Fermions with a Warped Fermi Contour. Physical Review Letters, 114 (17), 10.1103/PhysRevLett.114.176805
DOI: doi:10.1103/PhysRevLett.114.176805
ISSN: 0031-9007
EISSN: 1079-7114
Type of Material: Journal Article
Journal/Proceeding Title: Physical Review Letters
Version: Author's manuscript

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