| Issue |
Europhys. Lett.
Volume 55, Number 5, September 2001
|
|
|---|---|---|
| Page(s) | 712 - 718 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2001-00472-2 | |
| Published online | 01 December 2003 | |
Fractional-flux Little-Parks resistance oscillations in
disordered superconducting 
cylinders
Department of Physics, The Pennsylvania State University
University Park, PA 16802, USA
Received:
18
August
2000
Accepted:
27
June
2001
The resistance of disordered superconducting Au0.7In0.3 cylindrical films was measured as a function of applied magnetic field. In the high-temperature part of the superconducting transition regime, the resistance oscillated with a period of h/2e in units of the enclosed magnetic flux. However, at lower temperatures, the resistance peaks split. We argue that this splitting is due to the emergence of an oscillation with a period of h/4e, half of the flux quantum for paired electrons. The possible physical origin of the h/4e resistance oscillation is discussed in the context of new minima in the free energy of a disordered superconducting cylinder.
PACS: 74.40.+k – Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) / 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects / 74.76.Db – Conventional superconducting films
© EDP Sciences, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.