Nucleation of superconductivity in mesoscopic star-shaped superconductors

D. A. Dikin; V. Chandrasekhar; V. R. Misko; V. M. Fomin; J. T. Devreese

doi:10.1140/epjb/e2003-00216-2

Nucleation of superconductivity in mesoscopic star-shaped superconductors

D. A. Dikin^*, V. Chandrasekhar, V. R. Misko, V. M. Fomin, J. T. Devreese

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We study the phase transition of a star-shaped superconductor, which covers smoothly the range from zero to two dimensions with respect to the superconducting coherence length ξ (T). Detailed measurements and numerical calculations show that the nucleation of superconductivity in this device is very inhomogeneous: the superconducting order parameter is strongly enhanced and mostly robust in regions close to multiple boundaries. The strong inhomogeneity of the order parameter results in a rich structure of the superconducting transition as a function of temperature and magnetic field.

Original language	English (US)
Pages (from-to)	231-235
Number of pages	5
Journal	European Physical Journal B
Volume	34
Issue number	2
DOIs	https://doi.org/10.1140/epjb/e2003-00216-2
State	Published - Jul 2003

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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AU - Chandrasekhar, V.

AU - Misko, V. R.

AU - Fomin, V. M.

AU - Devreese, J. T.

PY - 2003/7

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AB - We study the phase transition of a star-shaped superconductor, which covers smoothly the range from zero to two dimensions with respect to the superconducting coherence length ξ (T). Detailed measurements and numerical calculations show that the nucleation of superconductivity in this device is very inhomogeneous: the superconducting order parameter is strongly enhanced and mostly robust in regions close to multiple boundaries. The strong inhomogeneity of the order parameter results in a rich structure of the superconducting transition as a function of temperature and magnetic field.

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Nucleation of superconductivity in mesoscopic star-shaped superconductors

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