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Geometrical commensurability oscillations in the magnetoresistance of a two-dimensional electron gas under microwave irradiation

Kukushkin, I V and Smet, J H and Falko, Vladimir and von Klitzing, K and Eberl, K (2002) Geometrical commensurability oscillations in the magnetoresistance of a two-dimensional electron gas under microwave irradiation. Physical Review B, 66 (12). -. ISSN 1098-0121

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Abstract

We report on 1/B-periodic magnetoresistance oscillations in a two-dimensional electron system induced by microwave irradiation. They are only present in high mobility samples when an initial light pulse has created a persistent photoconductive channel in the adjacent donor layer. The oscillations manifest a geometric commensurability between the electron cyclotron orbit and a steady-state periodic density modulation. The latter may originate from the non-linear dynamical screening of a surface acoustic wave potential in the persistent photoconductive channel, triggered by the incident monochromatic microwave.

Item Type: Article
Journal or Publication Title: Physical Review B
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 57036
Deposited By: ep_importer_pure
Deposited On: 31 Aug 2012 10:58
Refereed?: Yes
Published?: Published
Last Modified: 17 Sep 2013 08:36
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57036

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