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Switching currents limited by single phase slips in one-dimensional superconducting Al nanowires.

Publication ,  Journal Article
Li, P; Wu, PM; Bomze, Y; Borzenets, IV; Finkelstein, G; Chang, AM
Published in: Physical review letters
September 2011

An aluminum nanowire switches from superconducting to normal as the current is increased in an upsweep. The switching current (I(s)) averaged over upsweeps approximately follows the depairing critical current (I(c)) but falls below it. Fluctuations in I(s) exhibit three distinct regions of behaviors and are nonmonotonic in temperature: saturation well below the critical temperature T(c), an increase as T(2/3) at intermediate temperatures, and a rapid decrease close to T(c). Heat dissipation analysis indicates that a single phase slip is able to trigger switching at low and intermediate temperatures, whereby the T(2/3) dependence arises from the thermal activation of a phase slip, while saturation at low temperatures provides striking evidence that the phase slips by macroscopic quantum tunneling.

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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

September 2011

Volume

107

Issue

13

Start / End Page

137004

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Li, P., Wu, P. M., Bomze, Y., Borzenets, I. V., Finkelstein, G., & Chang, A. M. (2011). Switching currents limited by single phase slips in one-dimensional superconducting Al nanowires. Physical Review Letters, 107(13), 137004. https://doi.org/10.1103/physrevlett.107.137004
Li, Peng, Phillip M. Wu, Yuriy Bomze, Ivan V. Borzenets, Gleb Finkelstein, and A. M. Chang. “Switching currents limited by single phase slips in one-dimensional superconducting Al nanowires.Physical Review Letters 107, no. 13 (September 2011): 137004. https://doi.org/10.1103/physrevlett.107.137004.
Li P, Wu PM, Bomze Y, Borzenets IV, Finkelstein G, Chang AM. Switching currents limited by single phase slips in one-dimensional superconducting Al nanowires. Physical review letters. 2011 Sep;107(13):137004.
Li, Peng, et al. “Switching currents limited by single phase slips in one-dimensional superconducting Al nanowires.Physical Review Letters, vol. 107, no. 13, Sept. 2011, p. 137004. Epmc, doi:10.1103/physrevlett.107.137004.
Li P, Wu PM, Bomze Y, Borzenets IV, Finkelstein G, Chang AM. Switching currents limited by single phase slips in one-dimensional superconducting Al nanowires. Physical review letters. 2011 Sep;107(13):137004.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

September 2011

Volume

107

Issue

13

Start / End Page

137004

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences