Detecting the Kondo Screening Cloud Around a Quantum Dot

Ian Affleck and Pascal Simon
Phys. Rev. Lett. 86, 2854 – Published 26 March 2001
PDFExport Citation

Abstract

A fundamental prediction of scaling theories of the Kondo effect is the screening of an impurity spin by a cloud of electrons spread out over a mesoscopic distance. This cloud has never been observed experimentally. Recently, aspects of the Kondo effect have been observed in experiments on quantum dots embedded in quantum wires. Since the length of the wire may be of order the size of the screening cloud, such systems provide an ideal opportunity to observe it. We point out that persistent current measurements in a closed ring provide a conceptually simple way of detecting this fundamental length scale.

  • Received 1 December 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.2854

©2001 American Physical Society

Authors & Affiliations

Ian Affleck1,2 and Pascal Simon2

  • 1Canadian Institute for Advanced Research, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
  • 2Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1

References (Subscription Required)

Click to Expand
Issue

Vol. 86, Iss. 13 — 26 March 2001

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×