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Influence of Disorder on Superconducting Correlations in Nanoparticles

Title data

Croitoru, Mikhail D. ; Shanenko, A. A. ; Vagov, Alexei ; Vasenko, A. S. ; Milošević, M. V. ; Axt, Vollrath M. ; Peeters, F. M.:
Influence of Disorder on Superconducting Correlations in Nanoparticles.
In: Journal of Superconductivity and Novel Magnetism. Vol. 29 (2016) Issue 3 . - pp. 605-609.
ISSN 1557-1947
DOI: https://doi.org/10.1007/s10948-015-3319-8

Project information

Project financing: Supported by the Belgian Science Policy (BELSPO Back to Belgium Grant), the Flemish Science Foundation (FWO-Vl), the Methusalem Foundation of the Flemish Government, TOPBOF-UA, and the bilateral project CNPq-FWO-Vl.

Abstract in another language

We investigate how the interplay of quantum confinement and level broadening caused by disorder affects superconducting correlations in ultra-small metallic grains. We use the electron-phonon interaction-induced electron mass renormalization and the reduced static-path approximation of the BCS formalism to calculate the critical temperature as a function of the grain size. We show how the strong electron-impurity scattering additionally smears the peak structure in the electronic density of states of a metallic grain and imposes additional limits on the critical temperature under strong quantum confinement.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: superconductivity; confined systems; metallic grains; BCS; electron-phonon interaction; disorder; nanoparticles; superconducting correlations
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 02 Nov 2017 13:14
Last Modified: 02 Nov 2017 13:14
URI: https://eref.uni-bayreuth.de/id/eprint/40284