Coherent electronic backscattering in ballistic microstructures

Michael James Berry, J. H. Baskey, R. M. Westervelt, A. C. Gossard

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

A magnetoresistance peak at zero magnetic field due to coherent backscattering is studied in submicrometer quantum dots with quantum-point-contact leads. A systematic series of experiments on ballistic microstructures shows that coherent backscattering is distinct from conductance fluctuations at finite fields and gives properties in agreement with semiclassical theory. The effect results from interference between pairs of time-reversed paths of ballistic electrons scattered from the walls of the dot, analogous to weak localization in diffusive systems.

Original languageEnglish (US)
Pages (from-to)8857-8860
Number of pages4
JournalPhysical Review B
Volume50
Issue number12
DOIs
StatePublished - Jan 1 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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