MiTMoJCo: Microscopic Tunneling Model for Josephson Contacts

TL;DR

MiTMoJCo is a C library that facilitates detailed microscopic modeling of superconducting Josephson contacts, including pre-calculated parameters and tools for custom analysis, aiding research and design.

Contribution

It provides the first comprehensive computational tool for microscopic tunneling modeling of Josephson contacts, including pre-calculated data and customizable modules.

Findings

Efficient evaluation of superconducting tunnel currents.

Pre-calculated TCAs for common junctions.

Tools for signal analysis and modeling.

Abstract

MiTMoJCo (Microscopic Tunneling Model for Josephson Contacts) is C code which aims to assist modeling of superconducting Josephson contacts based on the microscopic tunneling theory. The code offers implementation of a computationally demanding part of this calculation, that is evaluation of superconducting pair and quasiparticle tunnel currents from the given tunnel current amplitudes (TCAs) which characterize the junction material. MiTMoJCo comes with a library of pre-calculated TCAs for frequently used Nb-AlOx-Nb and Nb-AlN-NbN junctions, a Python module for developing custom TCAs, supplementary optimum filtration module for extraction of a constant component of a sinusoidal signal and examples of modeling few common cases of superconducting Josephson contacts.