Parallel magnetic-field-induced conductance fluctuations in one- and two-subband ballistic quantum dots

C. Gustin, S. Faniel, B. Hackens, S. Melinte, M. Shayegan, V. Bayot

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We report on conductance fluctuations of ballistic quantum dots in a strictly parallel magnetic field B. The quantum dots are patterned in two-dimensional electron gases (2DEG’s), confined to 15- and 45-nm-thick GaAs quantum wells (QW) with one and two occupied subbands at B = 0, respectively. For both dots we observe universal conductance fluctuations (UCF’s) and, in the case of the wide QW dot, a reduction in their amplitude at large B. Our data suggest that the finite thickness of the 2DEG and the orbital effect are responsible for the parallel B-induced UCF’s.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number24
DOIs
StatePublished - Dec 18 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Parallel magnetic-field-induced conductance fluctuations in one- and two-subband ballistic quantum dots'. Together they form a unique fingerprint.

  • Cite this