Discrete transverse superconducting modes in nanocylinders

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Spatial variation in the superconducting order parameter becomes significant when the system is confined at dimensions well below the typical superconducting coherence length. Motivated by recent experimental success in growing single-crystal metallic nanorods, we study quantum confinement effects on superconductivity in a cylindrical nanowire in the clean limit. For large diameters, where the transverse level spacing is smaller than the superconducting order parameter, the usual approximations of Ginzburg-Landau theory are recovered. However, under external magnetic field the order parameter develops a spatial variation much stronger than that predicted by Ginzburg-Landau theory, and gapless superconductivity is obtained above a certain field strength. At small diameters, the discrete nature of the transverse modes produces significant spatial variations in the order parameter with increased average magnitude and multiple shoulders in the magnetic response.

Original languageEnglish (US)
Article number214526
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number21
DOIs
StatePublished - Jun 1 2004

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Superconductivity
Quantum confinement
Nanorods
Nanowires
superconductivity
Single crystals
Magnetic fields
shoulders
nanorods
field strength
nanowires
spacing
single crystals
approximation
magnetic fields

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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title = "Discrete transverse superconducting modes in nanocylinders",
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Discrete transverse superconducting modes in nanocylinders. / Han, J. E.; Crespi, Vincent Henry.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 69, No. 21, 214526, 01.06.2004.

Research output: Contribution to journalArticle

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