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

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

2000-03-20

arxiv.org/abs/cond-mat/0003325v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures included, to appear in JETP Letters

Scientific paper

10.1134/1.1307474

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 $\nu=3$ 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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