Nonlocality in superconducting microstructures

K. Yu Arutyunov*, J. P. Pekola, A. B. Pavolotski, J. P. Presnov

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

We discuss experimental evidence of nonlocality in superconducting nanostructures: the variation of the magnitude of the order parameter Δ(r) induces a response at a remote point r′. It is shown that reasonable agreement with experiment can be achieved by assuming nonlocal integral relation between Δ(r) and Δ(r′) with the kernel function K(r,r′)∝ (1/|r - r′|)exp(- |r - r′|/ξ Δ). Numerically the correlation length ξ Δ is close to the effective Pippard's coherence length 0.18ξ 0 Pip, while its dependence on the critical temperature T c is different than the conventional diverging behavior at the critical point T → T c.

Original languageEnglish
Article number064519
Pages (from-to)1-6
Number of pages6
JournalPhysical Review B (Condensed Matter and Materials Physics)
Volume64
Issue number6
DOIs
Publication statusPublished - 1 Aug 2001
MoE publication typeA1 Journal article-refereed

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