Nanotwin networks connecting columnar defects in YBa2Cu3O7-δand implications for magnetic vortex interactions

Y. Yan, M. A. Kirk

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A unique structure, a network of nanotwins, is revealed for the first time in high-energy ion-irradiated YBa2Cu3O7-δThis structure is shown to form only at ion doses of 1011cm-2or greater and thus is not revealed in any earlier electron microscopy studies. In this higher-dose regime, the well known columnar defects are connected by the nanotwin structure, thus affecting bulk superconducting properties. Consequences for a number of published interpretations of such measurements related to pinning and dynamics of magnetic vortices are discussed.

Original languageEnglish
Pages (from-to)841-848
Number of pages8
JournalPhilosophical Magazine Letters
Volume79
Issue number10
DOIs
StatePublished - Oct 1 1999
Externally publishedYes

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