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Pair suppression caused by mosaic-twist defects in superconducting Sr2RuO4 thin-films prepared using pulsed laser deposition

Accepted version
Peer-reviewed

Type

Article

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Authors

Vickers, ME 
Massabuau, FCP 

Abstract

Sr2RuO4 is a prototypical unconventional superconductor, but the superconducting symmetries of the bulk and surface states in single crystals remains controversial. Solving this problem is impeded by the challenge of producing thin-films of Sr2RuO4 free of defects and impurities which annihilate the superconductivity. Here, we report the reliable growth of superconducting Sr2RuO4 thin-films by pulsed laser deposition and identify the universal material properties that are destructive to the superconducting state. We demonstrate that careful control of the starting material is essential to achieve superconductivity as well as the use of a single crystal target of Sr3Ru2O7. By systematically varying the Sr2RuO4 film thickness, we identify mosaic twist as the key in-plane defect that suppresses superconductivity. These results are central to the development of our understanding of unconventional superconductivity.

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Journal Title

Communications Materials

Conference Name

Journal ISSN

2662-4443

Volume Title

Publisher

Nature Publishing Group UK

Rights

All rights reserved
Sponsorship
Engineering and Physical Sciences Research Council (EP/N017242/1)
Engineering and Physical Sciences Research Council (EP/P026311/1)