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Effect of thermal phase fluctuations on the inductances of Josephson junctions, arrays of junctions, and superconducting films
Physical Review B (Condensed Matter)
We calculate the factor by which thermal phase fluctuations, as distinct from phase-slip fluctuations, increase the inductance, LJ, of a resistively-shunted Josephson junction (JJ) above its mean-field value, L0. We find that quantum mechanics suppresses fluctuations when T drops below a temperature, TQ = h/kBGL0, where G is the shunt conductance. Examination of the calculated sheet inductance, LA(T)/L0(T), of arrays of JJ's reveals that 2-D interconnections halve fluctuation effects, whiledoi:10.1103/physrevb.61.1483 fatcat:dat663bekfanfezjhs5upxgwvi