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23 April 2024

» arxiv » cond-mat/0003325

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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 ;
Date:	20 Mar 2000
Subject:	Mesoscopic Systems and Quantum Hall Effect \| cond-mat.mes-hall
Affiliation:	Institute of Solid State Physics RAS, Chernogolovka, Russia) F. Hastreiter, A. Wixforth (Ludwig-Maximilians-Universität, München, Germany) K.L. Campman, A.C. Gossard (Materials Department and Center for Quantized Electronic Structures, Univer
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 $ u=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.
Source:	arXiv, cond-mat/0003325
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