Superconducting nanodrop model

TL;DR

This paper introduces a theoretical model for superconducting nanodrops based on the assumption of constant order parameter, analyzing their thermodynamic properties and phase transition characteristics.

Contribution

It presents a novel theoretical framework for understanding the thermodynamics of superconducting nanodrops using a specific assumption about the order parameter.

Findings

Defined thermodynamic characteristics of superconducting nanodrops

Calculated entropy and specific heat jumps at phase transition

Analyzed energy fluctuations and free energy in nanodrops

Abstract

Superconducting nanodrop model is constructed on the basis of the assumption of equality of the free energy functional gradient term to zero due to the order parameter value constancy in the superconducting nanodrop volume. In the investigation, we have defined the superconducting nanodrop thermodynamical characteristics: partition function, the magnitudes of the jumps in entropy and specific heat at the second order phase transition, total energy, energy fluctuation, specific heat, free energy, and entropy.