Spontaneous fluxoid formation in superconducting loops

R. Monaco, Jesper Mygind, R. Rivers, V. Koshelets

Research output: Contribution to journalJournal articleResearchpeer-review

367 Downloads (Pure)

Abstract

We report on the experimental verification of the Zurek-Kibble scenario in an isolated superconducting ring over a wide parameter range. The probability of creating a single flux quantum spontaneously during the fast normal-superconducting phase transition of a wide Nb loop clearly follows a scaling relation on the quenching time τQ, as one would expect if the transition took place as fast as causality permits. However, the observed Zurek-Kibble scaling exponent σ=0.62±0.15 is two times larger than anticipated for large loops. Assuming Gaussian winding number densities we show that this doubling is well founded for small annuli.
Original languageEnglish
JournalPhysical Review B Condensed Matter
Volume80
Issue number18
Pages (from-to)180501
ISSN0163-1829
DOIs
Publication statusPublished - 2009

Bibliographical note

Copyright 2009 American Physical Society

Fingerprint

Dive into the research topics of 'Spontaneous fluxoid formation in superconducting loops'. Together they form a unique fingerprint.

Cite this