Journal of Low Temperature Physics

, Volume 163, Issue 3–4, pp 164–169

Capacitively Enhanced Thermal Escape in Underdamped Josephson Junctions

  • Y. Yoon
  • S. Gasparinetti
  • M. Möttönen
  • J. P. Pekola
Article

Abstract

We have studied experimentally the escape dynamics in underdamped capacitively shunted and unshunted Josephson junctions with submicroampere critical currents below 0.5 K temperatures. In the shunted junctions, thermal activation process was preserved up to the highest temperature where the escape in the unshunted junctions exhibits the phase diffusion. Our observations in the shunted junctions are in good agreement with the standard thermal activation escape, unlike the results in the unshunted junctions.

Keywords

Josephson junction Phase diffusion Thermal activation 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Y. Yoon
    • 1
  • S. Gasparinetti
    • 1
  • M. Möttönen
    • 1
    • 2
  • J. P. Pekola
    • 1
  1. 1.Low Temperature LaboratoryAalto UniversityAaltoFinland
  2. 2.Department of Applied Physics/COMPAalto UniversityAaltoFinland

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