| Issue |
Europhys. Lett.
Volume 67, Number 2, July 2004
|
|
|---|---|---|
| Page(s) | 273 - 279 | |
| Section | Interdisciplinary physics and related areas of science and technology | |
| DOI | https://doi.org/10.1209/epl/i2004-10065-1 | |
| Published online | 01 July 2004 | |
Electric instability in superconductor-normal conductor ring
Theoretische Physik III, Ruhr-Universität Bochum - D-44801 Bochum, Germany
Corresponding author: kadig@tp3.ruhr-uni-bochum.de
Received:
26
February
2004
Accepted:
11
May
2004
Non-linear electrodynamics of a ring-shaped Andreev
interferometer (superconductor/normal conductor/superconductor
hybrid structure) coupled to a circuit of the dissipative current
is investigated. The current-voltage characteristics (CVC) is
demonstrated to be a series of loops with several branches
intersecting at the CVC origin. The sensitivity of the transport
current 
(or the applied voltage V) to a change of
the external magnetic flux can be the same as the sensitivity of
conventional SQUIDs. Spontaneous arising of coupled non-linear
oscillations of the transport current, the Josephson current and
the magnetic flux in Andreev interferometers are also predicted
and investigated. The frequency of these oscillations can be
varied in a wide range, while the maximal frequency can reach
.
PACS: 74.45.+c – Proximity effects; Andreev effect; SN and SNS junctions / 85.25.Dq – Superconducting quantum interference devices (SQUIDs)
© EDP Sciences, 2004
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