Original scientific paper

Amplitude of Aharonov-Bohm oscillations in mesoscopic metallic rings as a function of the DC bias voltage

C. Terrier ; Institute of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
C. Strunk ; Institute of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
T. Nussbaumer ; Institute of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
D. Babić ; Institute of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland; Department of Physics, Faculty of Science, University of Zagreb, Bijenička 32, HR-10001 Zagreb, Croatia
C. Schönenberger ; Institute of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland

Abstract

We report measurements of the amplitude of the Aharonov-Bohm oscillations in a mesoscopic diffusive gold ring as a function of the DC bias voltage VDC. The amplitude of the h/e oscillations increases with VDC once the Thouless energy Ec and thermal energy are exceeded, and decreases at higher values of VDC. The increase of the amplitude is interpreted in terms of a superposition of the statistically independent contributions of eVDC/Ec energy intervals, whereas its decrease at high VDC could be attributed to enhanced inelastic scattering processes.

Keywords

mesoscopic systems; Aharonov-Bohm oscillations; ensemble averaging

Hrčak ID:

300969

URI

https://hrcak.srce.hr/300969

Publication date:

1.7.1999.

Article data in other languages: croatian

Visits: 454 *