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Experimental observation of coherent backscattering in open ballistic microstructures

✍ Scribed by J.A. Katine; M.A. Eriksson; R.M. Westervelt; K.L. Campman; A.C. Gossard

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
132 KB
Volume
20
Category
Article
ISSN
0749-6036

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✦ Synopsis

We report on observations of coherent backscattering in open devices consisting of a quantum point contact and two reflector gates. The devices are fabricated in a high-mobility two-dimensional electron gas system, and magnetotransport data are taken at a temperature of 385 mK. Unlike ballistic microstructures in which this effect has previously been measured, our devices are designed to yield many backscattered trajectories enclosing very similar areas. An array of these devices has been measured in order to average away magnetoconductance fluctuations.

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