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HAIT Journal of Science and Engineering Volume 1, Issue 3, pp. 470-497 © 2004 Holon Academic Institute of Technology | |||||
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Non-uniform two-dimensional electron gas | |||||
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Centre for Advanced Nanotechnology University of Toronto, Toronto M5S 3E4, Canada e-mail: shik@ecf.utoronto.ca Received 8 September 2004, accepted 13 October 2004 | |||||
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Basic properties of a two-dimensional electron gas with spatially varying carrier concentration in external magnetic fields are reviewed. The two main problems: modification of galvanomagnetic coefficients due to random fluctuations of equilibrium concentration and the concentration gradient created by the Lorenz force in the Hall direction - are considered for weak, classically strong, and quantizing magnetic fields. The screening of concentration non-uniformities under the quantum Hall conditions are discussed separately. | |||||
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