Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2000 Mar 6;84(10):2223-6.

Spectroscopy of nanoscopic semiconductor rings.

Author information

  • 1Sektion Physik und CeNS, LMU Munchen, Geschwister-Scholl-Platz 1, 80539 Munchen, Germany.

Abstract

Making use of self-assembly techniques, we realize nanoscopic semiconductor quantum rings in which the electronic states are in the true quantum limit. We employ two complementary spectroscopic techniques to investigate both the ground states and the excitations of these rings. Applying a magnetic field perpendicular to the plane of the rings, we find that, when approximately one flux quantum threads the interior of each ring, a change in the ground state from angular momentum l = 0 to l = -1 takes place. This ground state transition is revealed both by a drastic modification of the excitation spectrum and by a change in the magnetic-field dispersion of the single-electron charging energy.

PMID:
11017249
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Physical Society
    Loading ...
    Write to the Help Desk