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VOLUME 75 (2002) | ISSUE 7 | PAGE 388
Deformation-induced thermomagnetic effects in a twisted weak-link-bearing superconductor
PACS: 74.50.+r, 74.62.Fj, 74.80.Bj, 75.80.+q
Abstract
Based upon the recently introduced thermophase and piezophase mesocopic quantum effects in Josephson junctions, several novel phenomena in a twisted superconductor (containing a small anular SIS-type contact) under influence of thermal gradient and applied magnetic field are predicted. Namely, we consider a torsional analog of Josephson piezomagnetism (and related magnetomechanical effect) as well as a possible generation of a heat flux induced magnetic moment in a weakly-coupled superconductor under a torsional deformation (analog of Zavaritskii effect) along with the concomitant phenomena of piezothermopower and piezothermal conductivity. The conditions under which the predicted effects can be experimentally measured in conventional superconductors and nanostructured materials with implanted Josephson contacts are discussed.