Confinement-induced enhancement of electron-electron interactions in open quantum-dot arrays

A. Shailos, J. P. Bird, C. Prasad, M. Elhassan, L. Shifren, D. K. Ferry, L. H. Lin, N. Aoki, Y. Ochiai, K. Ishibashi, Y. Aoyagi

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17 Scopus citations

Abstract

We study the properties of the logarithmic variation observed in the temperature-dependent conductance of open quantum-dot arrays. The magnitude of this variation is found to exhibit a well-defined scaling with system size, and is also found to be unaffected by the application of magnetic fields sufficient to break time-reversal symmetry. We suggest that these characteristics are consistent with the logarithmic variation resulting from a confinement-induced enhancement of electron interactions in the arrays. In particular, we note that the size-dependent scaling of this term is similar to that which we would expect for a system whose boundary interactions act to amplify the mutual repulsion of electrons trapped within it.

Original languageEnglish (US)
Article number241302
Pages (from-to)2413021-2413024
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number24
StatePublished - 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Shailos, A., Bird, J. P., Prasad, C., Elhassan, M., Shifren, L., Ferry, D. K., Lin, L. H., Aoki, N., Ochiai, Y., Ishibashi, K., & Aoyagi, Y. (2001). Confinement-induced enhancement of electron-electron interactions in open quantum-dot arrays. Physical Review B - Condensed Matter and Materials Physics, 63(24), 2413021-2413024. [241302].