Regensburg 2016 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 58: Transport: Poster Session

TT 58.53: Poster

Mittwoch, 9. März 2016, 15:00–18:30, Poster D

Influence of Andreev tunneling on the full counting statistics — •Philipp Stegmann and Jürgen König — Theoretische Physik, Universität Duisburg-Essen and CENIDE, 47048 Duisburg, Germany

We theoretically discuss the influence of Andreev tunneling on the full counting statistics of charge transfer. The slightest presence of Andreev tunneling yields qualitative different generalized factorial cumulants [1] for the short-time limit in comparison to the nonsuperconducting case. We illustrate this behavior for a superconducting lead weakly tunnel coupled to a normal-state metallic island [2]. By means of this example system, we demonstrate that generalized factorial cumulants can detect the presence of Andreev tunneling for longer times as well if the dependence on the parameter s or the visibly of interactions [1,3,4] is studied.
[1] P. Stegmann, B. Sothmann, A. Hucht, J. König,

PRB 92, 155413 (2015).
[2] V. F. Maisi, D. Kambly, C. Flindt, J. P. Pekola,

PRL 112, 036801 (2014).
[3] D. Kambly, C. Flindt, M. Büttiker, PRB 83, 075432 (2011).
[4] D. Kambly and C. Flindt, J. Comput. Electron. 12, 331 (2013).