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Proceedings Paper

Confinement and quantization effects in nanosuperconductors
Author(s): M. Morelle; L. F. Chibotaru; A. Ceulemans; C. Carballeira; V. V. Moshchalkov
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Paper Abstract

A systematic study of the geometry dependent nucleation of superconductivity in nanoscaled superconductors is presented in this paper. The experimental Τc(Η) phase boundary is compared to theoretical calculations obtained in the framework of the linearized Ginzburg-Landau theory for different geometries (square, triangle, disk). The influence of the transformation of a square into a rectangle on the Τc(Η) phase boundary is analyzed. In elongated rectangles, a crossover from a linear to a parabolic field dependence of Τc has been observed. The evolution of the superconducting state is studied in a perforated disk by varying the size of the hole. A transition from a one-dimensional to a two-dimensional regime is seen when increasing the magnetic field for disks with small holes.

Paper Details

Date Published: 10 September 2005
PDF: 15 pages
Proc. SPIE 5932, Strongly Correlated Electron Materials: Physics and Nanoengineering, 59321B (10 September 2005); doi: 10.1117/12.623044
Show Author Affiliations
M. Morelle, Katholieke Univ. Leuven (Belgium)
L. F. Chibotaru, Katholieke Univ. Leuven (Belgium)
A. Ceulemans, Katholieke Univ. Leuven (Belgium)
C. Carballeira, Katholieke Univ. Leuven (Belgium)
V. V. Moshchalkov, Katholieke Univ. Leuven (Belgium)

Published in SPIE Proceedings Vol. 5932:
Strongly Correlated Electron Materials: Physics and Nanoengineering
Ivan Bozovic; Davor Pavuna, Editor(s)

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