Volume 55, Number 4, August 2001
|Page(s)||545 - 551|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 December 2003|
Magnetotransport of coupled electron-holes
Department of Physics and Astronomy,
State University of New York Stony Brook,
NY 11794-3800, USA
2 Racah Institute of Physics, Hebrew University - Jerusalem 91904, Israel
Accepted: 1 June 2001
The carriers in InAs-GaSb double quantum wells are hybrid "electron-holes" . We study the magnetotransport properties of such particles using a two-component Keldysh technique, which results in a semi-analytic expression for the small-field current. This approach is necessary for calculating the zero-temperature current, which is large even when the Fermi energy lies within the hybridization gap (in a semiclassical (Boltzmann) approach this current vanishes). Magnetic-field dependence of the conductance is also affected significantly by the hybridization of electrons and holes.
PACS: 73.40.-c – Electronic transport in interface structures / 73.21.-b – Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems / 73.61.Ey – III-V semiconductors
© EDP Sciences, 2001
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