The effect of controllable optically-induced random anisotropic disorder on the magnetotransport in a two-dimensional electron system

We have studied the effect of optically-induced random, anisotropic disorder on the magnetoresistance of a two-dimensional electron gas by exposing the sample to an anisotropic laser speckle pattern. Changes in the amplitude of the Shubnikov-de Haas oscillations can be explained in terms of easy and...

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Bibliographic Details
Main Authors: Melhuish, G, Plaut, A, Simon, S, Rocher, N, Robbe, V, Holland, M, Stanley, C
Format: Journal article
Language:English
Published: 2005
Description
Summary:We have studied the effect of optically-induced random, anisotropic disorder on the magnetoresistance of a two-dimensional electron gas by exposing the sample to an anisotropic laser speckle pattern. Changes in the amplitude of the Shubnikov-de Haas oscillations can be explained in terms of easy and hard conductivity paths, parallel and perpendicular to the long axis of the oval speckle grains, respectively. © 2005 American Institute of Physics.