Dynamics of the Magnetic Flux Peculiar to Antiferromagnetic Superconductors
T. Krzysztoń
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-950 Wrocław, P.O. Box 1410, Poland
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Received: 25 09 2005;
It might be possible that in high temperature layered antiferromagnetic supeconductors an applied magnetic field causes the mixed state to be composed of Josephson vortices possessing magnetic domains. We discuss how this new kind of vortices moves through the intrinsic pinning potential and calculate their activation energy of thermal as well as quantum excitation. We show a possible new phenomenon of crossover from quantum to thermal creep in constant temperature forced by the change of intensity of the external field, or by the change of its direction in the basal plane of layered structure.
DOI: 10.12693/APhysPolA.109.513
PACS numbers: 74.60.-w, 74.25.Ha