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): 121306. -. 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:
Journal Article
Journal or Publication Title:
Physical review B
Uncontrolled Keywords:
/dk/atira/pure/core/keywords/physics
Subjects:
?? physicsqc physics ??
ID Code:
57036
Deposited By:
Deposited On:
31 Aug 2012 09:58
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2024 13:07