T.-C. Wei et al 2006 Europhys. Lett. 75 943 doi:10.1209/epl/i2006-10218-2
T.-C. Wei, D. Pekker, A. Rogachev, A. Bezryadin and P. M. Goldbart
Show affiliationsMagnetic fields and magnetic impurities are each known to suppress superconductivity. However, as the field quenches (i.e. polarizes) the impurities, rich consequences, including field-enhanced superconductivity, can emerge when both effects are present. In superconducting wires and thin films this field-spin interplay is investigated via the Eilenberger-Usadel scheme. Non-monotonic dependence of the critical current on the field (and therefore field-enhanced superconductivity) is found to be possible, even in parameter regimes for which the superconducting critical temperature decreases monotonically with increasing field. The present work complements that of Kharitonov and Feigel'man (JETP Lett., 82 (2005) 421), which predicts regimes of non-monotonic behavior of the critical temperature.
74.78.-w Superconducting films and low-dimensional structures
Issue 6 (September 2006)
Received 10 April 2006, accepted for publication 1 August 2006, in final form 1 August 2006
Published 23 August 2006
T.-C. Wei et al 2006 Europhys. Lett. 75 943
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