| Issue |
Europhys. Lett.
Volume 50, Number 2, April II 2000
|
|
|---|---|---|
| Page(s) | 250 - 256 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2000-00262-4 | |
| Published online | 01 September 2002 | |
π-shifted magnetoconductance oscillations in mesoscopic superconducting-normal heterostructures
1
NTT Basic Research
Laboratories - 3-1 Morinosato-Wakamiya Atsugi-Shi, Kanagawa 243-01,
Japan
2
Institut für Theoretische Festkörperphysik,
Universität Karlsruhe D-76128 Karlsruhe, Germany
3
Forschungszentrum Karlsruhe GmbH, Institut für Nanotechnologie
D-76021 Karlsruhe, Germany
4
P. N. Lebedev Physics Institute
Leninskii prospect 53, 117924 Moscow, Russia
Received:
12
April
1999
Accepted:
31
January
2000
Interference of proximity-induced superconducting correlations in mesoscopic metallic rings is sensitive to the magnetic flux Φ inside these rings. This is the reason for magnetoconductance oscillations in such systems. We detected experimentally and explained theoretically a novel effect: the phase of these oscillations can switch between 0 and π depending on the resistance of intermetallic interfaces and temperature. The effect is due to a nontrivial interplay between the proximity-induced enhancement of the local conductivity and the proximity-induced suppression of the density of states at low energies.
PACS: 73.23-b – Mesoscopic systems / 74.50+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects / 74.40+k – Fluctuations (noise, chaos, nonequilibrium superconductivity, localization etc.)
© EDP Sciences, 2000
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.