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arXiv · 1408.5223

Temperature and phase dynamics in superconducting weak-link

Anjan K. Gupta·Nikhil Kumar·Sourav Biswas
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Abstract

A time dependent thermal model for a superconducting constriction based weak-link (WL) is discussed for investigating the deterministic dynamics of its temperature and phase. A new dynamic regime is found where a non-zero voltage exists across the WL and its temperature stabilizes between the bath temperature and superconductor's critical temperature. This regime exists over a limited bias current range and gives rise to a new hysteretic regime in current-voltage characteristics. We also discuss the effect of fluctuations on the current-voltage characteristics and experimental implications of this dynamic regime.

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Anjan K. Gupta, Nikhil Kumar, Sourav Biswas. 2014-11-25. Temperature and phase dynamics in superconducting weak-link. https://doi.org/10.1063/1.4900742

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