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Tunneling through Ultrasmall NIS Junctions in Terms of Andreev Reflection. A Nonlinear Response Approach
Author(s) -
Hädicke A.,
Krech W.
Publication year - 1995
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221910114
Subject(s) - andreev reflection , quantum tunnelling , nonlinear system , condensed matter physics , reflection (computer programming) , physics , quantum mechanics , superconductivity , computer science , programming language
The Andreev current through an ultrasmall NIS junction is calculated in a systematic way by means of a nonlinear response approach basing on the elementary Hamiltonian of quasiparticle tunneling. The voltage dependence of current and differential conductance as well as the Andreev conductance are derived for low‐ and high‐impedance environments, respectively.