Influence of shape on electron transport in ballistic quantum dots

M. J. Berry, J. A. Katine, R. M. Westervelt, A. C. Gossard

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

We have investigated the low-temperature (T=0.43-4.25 K) magnetotransport of quantum dots fabricated in the shape of an open circle and a circle having a central bar. The characteristic magnetic fields for both coherent backscattering and conductance fluctuations are strongly shape dependent: both are larger by a factor 3 in the device with the central bar. Comparison of large and small devices of nominally identical shape shows that characteristic trajectory areas are proportional to the device area.

Original languageEnglish (US)
Pages (from-to)17721-17724
Number of pages4
JournalPhysical Review B
Volume50
Issue number23
DOIs
StatePublished - Jan 1 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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