Volume 67, Number 1, July 2004
|Page(s)||77 - 83|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 June 2004|
Effective mass in quasi–two-dimensional systems
Institute of Physics, Chemnitz University of Technology - 09107 Chemnitz, Germany and Max-Planck-Institute for the Physics of Complex Systems - 01187 Dresden, Germany
Accepted: 3 May 2004
The effective mass of the quasiparticle excitations in quasi–two-dimensional systems is calculated analytically. It is shown that the effective mass increases sharply when the density approaches the critical one of metal-insulator transition. This suggests a Mott-type transition rather than an Anderson-like transition. The experimental measurements can be reproduced in this way without any additional parameter.
PACS: 71.30.+h – Metal-insulator transitions and other electronic transitions / 73.90.+f – Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures / 05.60.-k – Transport processes
© EDP Sciences, 2004
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