Exploring the behavior of superconductors and Josephson junctions: temperature and current effects by RCSJ model

Abstract

The behavior of superconductors and Josephson junctions with respect to temperature and current is discussed in this article. The damping nature of superconductors decreases with increase of temperature which increases the conductivity of superconductors and the current across the junction is dependent on superconducting properties of materials. The Cooper pairs that move through a superconductor without resistance across the Josephson junction determines the current through it and its dynamic properties can be affected by the vibrational energy of the atoms in the junction, leading to the creation of phonons which can interact with the Cooper pairs which reduces the current. The behavior of Cooper pairs across the junctions which describes the collective properties and temperature of superconductor can be investigated using RCSJ model. Finally, the entropy of Cooper pair can affect the temperature dependence of Josephson current, with an increase in entropy leading to a decrease in current. Through studying these properties and their interactions can help in the development of better superconducting materials for use in various applications.