Modeling Rectification Effects in Mesoscopic Superconducting Devices

Details Modeling Rectification Effects in Mesoscopic Superconducting Devices Modeling Rectification Effects in Mesoscopic Superconducting Devices

2010-12-30

arxiv.org/abs/1101.0159v1

Physica C: Superconductivity. Volume 471, Issue 13-14, p. 432-436, 2011

Physics

Condensed Matter

Superconductivity

15 pages, 6 figures

Scientific paper

10.1016/j.physc.2011.04.008.

We study thermal fluctuations and capacitive effects on small Josephson Junction Rings (JJR) that mimics the rectification phenomena recently observed in triangle shaped mesoscopic superconductors, due to the superposition of the field induced persistent current with the bias current. At finite temperature we predicted that the amplitude of the rectified signal depends strongly on the current contacts configuration on the JJR, in coincidence with experiments. In addition we analize the range of parameters where a closed loop of capacitive junctions is an appropriate model to explain the experimental observations. We conclude that the closed loop of weak links, a JJR, is a simple, robust and good enough model to explain the observed voltage rectification effects on mesoscopic superconducting samples for a wide range of temperature.

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