Measurements of the effective mass and scattering times of composite fermions from magnetotransport analysis

D. R. Leadley, R. J. Nicholas, C. T. Foxon, and J. J. Harris
Phys. Rev. Lett. 72, 1906 – Published 21 March 1994
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Abstract

An experimental analysis of the fractional quantum Hall effect is described in which oscillations in ρxx are treated as Shubnikov–de Haas oscillations of the composite fermions (CF) formed by a flux attachment transformation. We find a CF effective mass of 0.5me at zero effective field which increases weakly with effective magnetic field at a rate independent of carrier density. The CF quantum scattering times are the same as for the underlying single particle electron states.

  • Received 3 December 1993

DOI:https://doi.org/10.1103/PhysRevLett.72.1906

©1994 American Physical Society

Authors & Affiliations

D. R. Leadley, R. J. Nicholas, C. T. Foxon, and J. J. Harris

  • Department of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
  • Department of Physics, Nottingham University, University Park, Nottingham NG7 2RD, United Kingdom
  • Department of Electronic Engineering, University College, London, United Kingdom

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Vol. 72, Iss. 12 — 21 March 1994

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