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Intrinsic Quantum Dissipation in Superconducting Weak Links

  • Artem V. GalaktionovEmail author
  • Dmitry S. Golubev
  • Andrei D. Zaikin
Original Paper

Abstract

We evaluate the frequency spectrum for an intrinsic quantum dissipative environment for the Josephson phase φ formed by subgap Andreev bound states in superconducting weak links. We also analyze the problem of macroscopic quantum tunneling (MQT) of φ in highly transparent weak links and identify several MQT regimes. Within the exponential accuracy, we derive the expression for the supercurrent quantum decay rate both at low temperatures and in the vicinity of the quantum-to-classical crossover.

Keywords

Macroscopic quantum tunneling Dissipation Josephson effect Superconductivity 

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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • Artem V. Galaktionov
    • 1
    Email author
  • Dmitry S. Golubev
    • 2
  • Andrei D. Zaikin
    • 1
    • 3
  1. 1.I.E. Tamm Department of Theoretical PhysicsP.N. Lebedev Physical InstituteMoscowRussia
  2. 2.Low Temperature Laboratory, Department of Applied PhysicsAalto UniversityEspooFinland
  3. 3.Institute of NanotechnologyKarlsruhe Institute of Technology (KIT)KarlsruheGermany

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