Overscreening Diamagnetism in Cylindrical Superconductor-normal Metal-heterostructures

Belzig, Wolfgang; Bruder, Christoph; Nazarov, Yuli V.

Overscreening Diamagnetism in Cylindrical Superconductor-normal Metal-heterostructures

Dateien

fulltext.pdfGröße: 254.7 KBDownloads: 298

Datum

2007

Autor:innen

Belzig, Wolfgang

Bruder, Christoph

Nazarov, Yuli V.

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal of Low Temperature Physics. 2007, 147, pp. 441-456. Available under: doi: 10.1007/s10909-007-9326-9

Zusammenfassung

We study the linear diamagnetic response of a superconducting cylinder coated by a normal-metal layer due to the proximity effect using the clean limit quasiclassical Eilenberger equations. We compare the results for the susceptibility with those for a planar geometry. Interestingly, for R~d the cylinder exhibits a stronger overscreening of the magnetic field, i.e., at the interface to the superconductor it can be less than (-1/2) of the applied field. Even for R>>d, the diamagnetism can be increased as compared to the planar case, viz. the magnetic susceptibility 4px becomes smaller than -3/4. This behavior can be explained by an intriguing spatial oscillation of the magnetic field in the normal layer.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

BELZIG, Wolfgang, Christoph BRUDER, Yuli V. NAZAROV, 2007. Overscreening Diamagnetism in Cylindrical Superconductor-normal Metal-heterostructures. In: Journal of Low Temperature Physics. 2007, 147, pp. 441-456. Available under: doi: 10.1007/s10909-007-9326-9

BibTex

@article{Belzig2007Overs-8903,
  year={2007},
  doi={10.1007/s10909-007-9326-9},
  title={Overscreening Diamagnetism in Cylindrical Superconductor-normal Metal-heterostructures},
  volume={147},
  journal={Journal of Low Temperature Physics},
  pages={441--456},
  author={Belzig, Wolfgang and Bruder, Christoph and Nazarov, Yuli V.}
}

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