On the Magnetic Penetration Depth in Superconducting Ultrathin Lead Films

Durajski, A.; Szczęśniak, R.

doi:10.12693/APhysPolA.131.1051

Journal

Acta Physica Polonica A

2017 | 131 | 4 | 1051-1053

Article title

On the Magnetic Penetration Depth in Superconducting Ultrathin Lead Films

Authors

A. Durajski , R. Szczęśniak

Content

Full texts:

http://przyrbwn.icm.edu.pl/APP/PDF/131/a131z4p144.pdf [remote]

Title variants

Languages of publication

Abstracts

In the present paper, we report a theoretical study of the magnetic London penetration depth in ultrathin Pb films consisting of five to ten monolayers. Our calculations were performed within the framework of the strong-coupling approach. We observed that for thin films, the thermodynamic parameter exhibits an oscillatory behaviour connected with a quantum size effect. Moreover, we proved that the London penetration depth of Pb films cannot be correctly described using the Bardeen-Cooper-Schrieffer theory of superconductivity due to the strong-coupling and retardation effects. The Eliashberg theory, used in this paper, goes beyond the BCS theory to include these effects which allows to describe the superconducting state on the quantitative level.

Keywords

74.20.Fg 74.25.Bt 74.62.Fj

Discipline

Publisher

Journal

Acta Physica Polonica A

Year

2017

Volume

131

Issue

Pages

1051-1053

Physical description

Dates

published

2017-04

Contributors

author

A. Durajski

Institute of Physics, Częstochowa University of Technology, Av. Armii Krajowej 19, 42-200 Częstochowa, Poland

author

R. Szczęśniak

Institute of Physics, Częstochowa University of Technology, Av. Armii Krajowej 19, 42-200 Częstochowa, Poland

References

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Document Type

Publication order reference

Identifiers

DOI

10.12693/APhysPolA.131.1051

YADDA identifier

bwmeta1.element.bwnjournal-article-appv131n4144kz