Density of states between Landau levels in a two-dimensional electron gas
- 15 July 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 38 (2) , 1340-1343
- https://doi.org/10.1103/physrevb.38.1340
Abstract
The density of states (DOS) of a two-dimensional gas of electrons in a magnetic field and interacting with disorder is derived using path-integral methods. For disorder having a finite correlation length (L∼100Å), we find broad Landau levels (LL’s) which lead to a large DOS between LL’s, in agreement with experiments on heterojunctions. The essential new feature, which provides a DOS between LL’s, is recognizing the role of the correlation length.Keywords
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