Magnetic-field-driven destruction of quantum Hall states in a double quantum well
Authors:
- 9 April 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 64 (15) , 1793-1796
Abstract
The magnetotransport of double-quantum-well structures reveals a high-magnetic-field regime in which quantum Hall states at odd-integer ν are missing, where ν is the number of filled energy levels. In these double wells, the ν=odd quantum Hall states originate from the symmetric-antisymmetric energy gap. With increasing barrier thickness between the two wells, initially the magnetic field destroys only the ν=1 state, then both the ν=1 and ν=3 states disappear. We attribute their destruction to the onset of interwell electron density fluctuations.Keywords
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