Electron correlations at the fractional quantum Hall edge
نویسندگان
چکیده
This paper reviews tunnel spectroscopy of fractional quantum Hall edges using cleaved-edge overgrown devices. Beginning with an intuitive introduction to various experimental and theoretical aspects, the device structure is reviewed, and the experimental result of a continuum of powerlaw tunneling exponents is revisited. The unanticipated behavior of the exponent with fractional filling factor is described, and all subsequent theoretical explanations for these results are laid out for comparison. Finally, we propose new directions for experimentally resolving the remaining questions. c © 2006 Elsevier Ltd. All rights reserved. PACS: 73.43.Jn; 73.43.-f; 73.22.Lp
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