Quantum collective creep

Journal Article · Mon Jun 24 04:00:00 EDT 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.3297· OSTI ID:5589324

Blatter, G; Geshkenbein, V B; Vinokur, V M ^[1]

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1. Theoretische Physik Eidgenoessiche Technische Hochschule-Hoenggerberg, CH-8093 Zuerich, Switzerland (CH) Asea Brown Boveri, Corporate Research, CH-5405 Baden, Switzerland (CH) L. D. Landau Institute for Theoretical Physics, 117940 Moscow, U.S.S.R. (SU) Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (USA)

We study the phenomenon of quantum creep in bulk superconductors within the framework of weak-collective-pinning theory. Single-vortex pinning at moderate magnetic fields as well as creep of vortex bundles at high fields are discussed for the case of current densities near critical. In the limit of strong dissipation and for moderate fields the basic parameter determining the tunneling rate is the ratio {rho}{sub {ital n}}/{xi} ({rho}{sub {ital n}}=normal-state resistivity, {xi}=coherent length), with strong tunneling realized for {rho}{sub {ital h}}/{xi}{approx gt}1 k{Omega}.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5589324
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:25; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COLLECTIVE EXCITATIONS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FUNCTIONS
LAGRANGIAN FUNCTION
MAGNETIC FLUX
SUPERCONDUCTORS
TUNNEL EFFECT