We discuss an extension of our earlier work on the time-dependent Landauer- Buttiker formalism for noninteracting electronic transport. The formalism can without complication be extended to superconducting central regions since the Green's functions in the Nambu representation satisfy the same equations of motion which, in turn, leads to the same closed expression for the equal-time lesser Green's function, i.e., for the time-dependent reduced one-particle density matrix. We further write the finite-temperature frequency integrals in terms of known special functions thereby considerably speeding up the computation. Simulations in simple normal metal - superconductor - normal metal junctions are also presented.

Tuovinen, R., Van Leeuwen, R., Perfetto, E., Stefanucci, G. (2016). Time-dependent Landauer - Büttiker formalism for superconducting junctions at arbitrary temperatures. JOURNAL OF PHYSICS. CONFERENCE SERIES, 696(1), 012016 [10.1088/1742-6596/696/1/012016].

Time-dependent Landauer - Büttiker formalism for superconducting junctions at arbitrary temperatures

Perfetto, E;STEFANUCCI, GIANLUCA
2016-01-01

Abstract

We discuss an extension of our earlier work on the time-dependent Landauer- Buttiker formalism for noninteracting electronic transport. The formalism can without complication be extended to superconducting central regions since the Green's functions in the Nambu representation satisfy the same equations of motion which, in turn, leads to the same closed expression for the equal-time lesser Green's function, i.e., for the time-dependent reduced one-particle density matrix. We further write the finite-temperature frequency integrals in terms of known special functions thereby considerably speeding up the computation. Simulations in simple normal metal - superconductor - normal metal junctions are also presented.
2016
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/03 - FISICA DELLA MATERIA
English
Physics and Astronomy (all)
http://www.iop.org/EJ/journal/conf
Tuovinen, R., Van Leeuwen, R., Perfetto, E., Stefanucci, G. (2016). Time-dependent Landauer - Büttiker formalism for superconducting junctions at arbitrary temperatures. JOURNAL OF PHYSICS. CONFERENCE SERIES, 696(1), 012016 [10.1088/1742-6596/696/1/012016].
Tuovinen, R; Van Leeuwen, R; Perfetto, E; Stefanucci, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/174000
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