Probing a two-dimensional Fermi surface by tunneling

Authors:

15 September 1991

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 44 (12) , 6511-6514
DOI:10.1103/physrevb.44.6511
PMID:9998517

Abstract

Equilibrium tunneling between parallel two-dimensional electron systems is measured as a function of in-plane magnetic field and sheet density. For equal two-dimensional densities the tunnel conductance is sharply peaked around zero field, but varies slowly at intermediate fields. Around 6 T the conductance exhibits a weaker peak followed by an abrupt drop to zero. A simple model of two displaced, but intersecting, Fermi circles explains these results.

Keywords

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