Resistive states created in superconducting NbTiN filaments by an electrical current pulse

K. Harrabi

doi:10.1063/1.4914103

Resistive states created in superconducting NbTiN filaments by an electrical current pulse

K. Harrabi^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We have observed as a function of the time the appearance of the voltage caused by a larger-than-critical (I > I_c) step-pulse of current in narrow NbTiN strips at 4.2 K. Different current intensities produced either phase-slip centres characterized by a voltage saturating with the time, or ever expanding hot spots. These dissipative structures occur after a measurable delay time, whose dependence upon the ratio I/I_c can be analysed through a Ginzburg-Landau theory to yield a unique adjustable time constant.

Original language	English
Article number	037102
Journal	AIP Advances
Volume	5
Issue number	3
DOIs	https://doi.org/10.1063/1.4914103
State	Published - 1 Mar 2015

Bibliographical note

Publisher Copyright:
© 2015 Author(s).

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.4914103

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abstract = "We have observed as a function of the time the appearance of the voltage caused by a larger-than-critical (I > Ic) step-pulse of current in narrow NbTiN strips at 4.2 K. Different current intensities produced either phase-slip centres characterized by a voltage saturating with the time, or ever expanding hot spots. These dissipative structures occur after a measurable delay time, whose dependence upon the ratio I/Ic can be analysed through a Ginzburg-Landau theory to yield a unique adjustable time constant.",

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AB - We have observed as a function of the time the appearance of the voltage caused by a larger-than-critical (I > Ic) step-pulse of current in narrow NbTiN strips at 4.2 K. Different current intensities produced either phase-slip centres characterized by a voltage saturating with the time, or ever expanding hot spots. These dissipative structures occur after a measurable delay time, whose dependence upon the ratio I/Ic can be analysed through a Ginzburg-Landau theory to yield a unique adjustable time constant.

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Resistive states created in superconducting NbTiN filaments by an electrical current pulse

Abstract

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