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Effective masses in high-mobility 2D electron gas structures

Coleridge, Peter T and Hayne, M and Zawadzki, P and Sachrajda, Andrew S (1996) Effective masses in high-mobility 2D electron gas structures. Surface Science, 362 (1-3). pp. 560-563. ISSN 0039-6028

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Abstract

Effective masses derived from the low-field Shubnikov-de Haas oscillations in high mobility GaAs/AlGaAs samples are found to decrease systematically with density. Measurements in a low-density sample show the temperature dependence does not conform to standard theory. It is argued that this is to be expected when there is extra structure, in addition to the Landau levels, in the density of states. This may be important in interpreting measurements of composite fermion effective masses.

Item Type: Article
Journal or Publication Title: Surface Science
Uncontrolled Keywords: composite fermion ; effective masses ; Shubnikov-deHaas ; SCATTERING
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 52013
Deposited By: ep_importer_pure
Deposited On: 12 Dec 2011 14:40
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 22:57
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/52013

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