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Opening an energy gap in an electron double layer system at integer filling factor in a tilted magnetic field

E. V. Deviatov·V. S. Khrapai·A. A. Shashkin·V. T. Dolgopolov·F. Hastreiter·A. Wixforth·K. L. Campman·A. C. Gossard
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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 $ν=3$ and 4, a parallel magnetic field component is found to give rise to opening 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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E. V. Deviatov, V. S. Khrapai, A. A. Shashkin, V. T. Dolgopolov, F. Hastreiter, A. Wixforth, K. L. Campman, A. C. Gossard. 2000-05-22. Opening an energy gap in an electron double layer system at integer filling factor in a tilted magnetic field. https://doi.org/10.1134/1.1307474

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