Confinement and quantization effects in nanosuperconductors

M. Morelle; L. F. Chibotaru; A. Ceulemans; C. Carballeira; V. V. Moshchalkov

doi:10.1117/12.623044

10 September 2005 Confinement and quantization effects in nanosuperconductors

M. Morelle, L. F. Chibotaru, A. Ceulemans, C. Carballeira, V. V. Moshchalkov

Proceedings Volume 5932, Strongly Correlated Electron Materials: Physics and Nanoengineering; 59321B (2005) https://doi.org/10.1117/12.623044
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

A systematic study of the geometry dependent nucleation of superconductivity in nanoscaled superconductors is presented in this paper. The experimental Τ_c(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 Τ_c(Η) phase boundary is analyzed. In elongated rectangles, a crossover from a linear to a parabolic field dependence of Τ_c 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.

Citation Download Citation

M. Morelle, L. F. Chibotaru, A. Ceulemans, C. Carballeira, and V. V. Moshchalkov "Confinement and quantization effects in nanosuperconductors", Proc. SPIE 5932, Strongly Correlated Electron Materials: Physics and Nanoengineering, 59321B (10 September 2005); https://doi.org/10.1117/12.623044

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