Titlebook: High Magnetic Fields in Semiconductor Physics; Proceedings of the I Gottfried Landwehr Conference proceedings 1987 Springer-Verlag Berlin H

Supplement

Conference proceedings 1987s in silicon field-effect transistors have become of practical interest. Since the discovery of the quantum Hall effect by Klaus von Klitzing in 1980, this subject has grown exponentially. The book contains 42 invited papers and 37 contributed papers which were presented at the 7th of the traditiona

砍伐

Percolation Approach to the Quantum Hall Effectsimple manner a number of other experimental features of the QHE and relate them to a specific model of electronic states in the presence of disorder in the sample. In this work I shall review the basic picture, following refs. [3,4] as well as some unpublished work, mostly done in collaboration with R. F. Kazarinov.

ferment

他很靈活

Localization in Landau Levels of 2D Systems and the Quantum Hall Effectcept those just at the center of the Landau level in sufficiently strong magnetic fields. The energy of extended states is shifted to the higher energy side with decreasing magnetic field. There is a scaling relation between the diagonal and off-diagonal components of the conductivity tensor.

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ANN

Quantum Hall Effect: From the Winding Number to the Flow Diagram system size and degree of disorder giving rise to a well-behaved σ. for lattice systems with Landau-level mixing and (iii) the flow diagram for σ. vs σ. obtained by the Thouless number exhibits characteristic behaviours.