Resistively and capacitively shunted Josephson junctions model for unconventional superconductors

—An array of resistively and capacitively shunted Josephson junctions with nonsinusoidal currentphase relation is considered for modelling the resistive transition in high-Tc superconductors. The emergence of higher harmonics, besides the sinusoid Ic sin φ, is expected for dominant d-wave symmetry of the Cooper pairs, random distribution of potential drops and dirty grains, or in nonstationary conditions. We show that additional cosine term acts by modulating the global resistance, due to the weak-links whose transition occurs through mixed superconductive-normal states.

• Type: Journal
• Year: 2011
• Where: CCECE
• Authors: Linda Ponta, Anna Carbone, Marco Gilli, Piero Mazzetti
• Keywords: CCECE 2011, Cooper Pairs, Electrical And Computer Engineering, Josephson Junctions, Tc Superconductors