Enhanced spin-triplet superconductivity near dislocations in Sr 2 RuO 4

Y. A. Ying, N. E. Staley, Y. Xin, K. Sun, X. Cai, D. Fobes, T. J. Liu, Zhiqiang Mao, Ying Liu

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Superconductors with a chiral p-wave pairing are of great interest because they could support Majorana modes that could enable the development of topological quantum computing technologies that are robust against decoherence. Sr 2 RuO 4 is widely believed to be a chiral p-wave superconductor. Yet, the mechanism by which superconductivity emerges in this, and indeed most other unconventional superconductors, remains unclear. Here we show that the local superconducting transition temperature in the vicinity of lattice dislocations in Sr 2 RuO 4 can be up to twice that of its bulk. This is all the more surprising for the fact that disorder is known to easily quench superconductivity in this material. With the help of a phenomenological theory that takes into account the crystalline symmetry near a dislocation and the pairing symmetry of Sr 2 RuO 4, we predict that a similar enhancement should emerge as a consequence of symmetry reduction in any superconductor with a two-component order parameter.

Original languageEnglish (US)
Article number2596
JournalNature communications
Volume4
DOIs
StatePublished - Nov 8 2013

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Superconductivity
Superconducting materials
superconductivity
Crystal symmetry
symmetry
quantum computation
Dislocations (crystals)
Transition Temperature
transition temperature
disorders
Crystalline materials
augmentation
Technology

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Ying, Y. A. ; Staley, N. E. ; Xin, Y. ; Sun, K. ; Cai, X. ; Fobes, D. ; Liu, T. J. ; Mao, Zhiqiang ; Liu, Ying. / Enhanced spin-triplet superconductivity near dislocations in Sr 2 RuO 4 In: Nature communications. 2013 ; Vol. 4.
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Enhanced spin-triplet superconductivity near dislocations in Sr 2 RuO 4 . / Ying, Y. A.; Staley, N. E.; Xin, Y.; Sun, K.; Cai, X.; Fobes, D.; Liu, T. J.; Mao, Zhiqiang; Liu, Ying.

In: Nature communications, Vol. 4, 2596, 08.11.2013.

Research output: Contribution to journalArticle

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AU - Ying, Y. A.

AU - Staley, N. E.

AU - Xin, Y.

AU - Sun, K.

AU - Cai, X.

AU - Fobes, D.

AU - Liu, T. J.

AU - Mao, Zhiqiang

AU - Liu, Ying

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