Abstract
We employ magnetocapacitance measurements to study the spectrum of a double layer system with gate-voltage-tuned electron density distributions in tilted magnetic fields. For the dissipative state in normal magnetic fields at filling factor v=3 and 4, a parallel magnetic field component is found to give rise to the opening of a gap at the Fermi level. We account for the effect in terms of parallel-field-caused orthogonality breaking of the Landau wave functions with different quantum numbers for two subbands.
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From Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 71, No. 12, 2000, pp. 724–729.
Original English Text Copyright © 2000 by Deviatov, Khrapa\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Shashkin, Dolgopolov, Hastreiter, Wixforth, Campman, Gossard.
This article was submitted by the authors in English.
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Deviatov, E.V., Khrapai, V.S., Shashkin, A.A. et al. Opening an energy gap in an electron double layer system at the integer filling factor in a tilted magnetic field. Jetp Lett. 71, 496–499 (2000). https://doi.org/10.1134/1.1307474
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DOI: https://doi.org/10.1134/1.1307474