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Title: Composite Fermions with a Warped Fermi Contour

Abstract

Via measurements of commensurability features near the Landau filling factor nu = 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.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; National Science Foundation (NSF)
OSTI Identifier:
1352827
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 114; Journal Issue: 17
Country of Publication:
United States
Language:
English

Citation Formats

Mueed, M. A., Kamburov, D., Liu, Yang, Shayegan, M., Pfeiffer, L. N., West, K. W., Baldwin, K. W., and Winkler, R. Composite Fermions with a Warped Fermi Contour. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.114.176805.
Mueed, M. A., Kamburov, D., Liu, Yang, Shayegan, M., Pfeiffer, L. N., West, K. W., Baldwin, K. W., & Winkler, R. Composite Fermions with a Warped Fermi Contour. United States. doi:10.1103/PhysRevLett.114.176805.
Mueed, M. A., Kamburov, D., Liu, Yang, Shayegan, M., Pfeiffer, L. N., West, K. W., Baldwin, K. W., and Winkler, R. Wed . "Composite Fermions with a Warped Fermi Contour". United States. doi:10.1103/PhysRevLett.114.176805.
@article{osti_1352827,
title = {Composite Fermions with a Warped Fermi Contour},
author = {Mueed, M. A. and Kamburov, D. and Liu, Yang and Shayegan, M. and Pfeiffer, L. N. and West, K. W. and Baldwin, K. W. and Winkler, R.},
abstractNote = {Via measurements of commensurability features near the Landau filling factor nu = 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.},
doi = {10.1103/PhysRevLett.114.176805},
journal = {Physical Review Letters},
number = 17,
volume = 114,
place = {United States},
year = {Wed Apr 01 00:00:00 EDT 2015},
month = {Wed Apr 01 00:00:00 EDT 2015}
}