DC Josephson current

  Copyright (C) 2009-2016 Peter Rakyta, Ph.D.

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see http://www.gnu.org/licenses/.

Description

Calculates the DC Josephson current in an SNS geometry. Works both for square and hexagonal lattices. However, for simplicity the default parameters of this example are describing a one-dimensional tight binding chain studied in the reference below.

Reference

E. Perfetto, G. Stefanucci, and M. Cini, Equilibrium and time-dependent Josephson current in one-dimensional superconducting junctions, Phys. Rev. B 80, 205408 (2009)

Syntax

JosephsonCurrent( filenum )

The expected result