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  • Charpentier, Sophie,1983Chalmers tekniska högskola,Chalmers University of Technology (author)

Induced unconventional superconductivity on the surface states of Bi2Te3 topological insulator

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017-12-08
  • Springer Science and Business Media LLC,2017
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:6e2f6382-0d4d-4dd8-b793-ea22ab800969
  • https://doi.org/10.1038/s41467-017-02069-zDOI
  • https://research.chalmers.se/publication/254131URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Topological superconductivity is central to a variety of novel phenomena involving the interplay between topologically ordered phases and broken-symmetry states. The key ingredient is an unconventional order parameter, with an orbital component containing a chiral p(x) + ip(y) wave term. Here we present phase-sensitive measurements, based on the quantum interference in nanoscale Josephson junctions, realized by using Bi2Te3 topological insulator. We demonstrate that the induced superconductivity is unconventional and consistent with a sign-changing order parameter, such as a chiral px + ipy component. The magnetic field pattern of the junctions shows a dip at zero externally applied magnetic field, which is an incontrovertible signature of the simultaneous existence of 0 and pi coupling within the junction, inherent to a non trivial order parameter phase. The nano-textured morphology of the Bi2Te3 flakes, and the dramatic role played by thermal strain are the surprising key factors for the display of an unconventional induced order parameter.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • galletti, luca,1986Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)galletti (author)
  • Kunakova, Gunta,1987Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)gunta (author)
  • Arpaia, Riccardo,1985Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)arpaia (author)
  • Song, Yuxin,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)yuxin (author)
  • Baghdadi, Reza,1984Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)baghdadi (author)
  • Wang, Shu Min,1963Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)shumin (author)
  • Kalaboukhov, Alexei,1975Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ascry (author)
  • Olsson, Eva,1960Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f10eva (author)
  • Tafuri, FrancescoUniversita Degli Studi Di Napoli Federico Ii,University of Naples Federico II (author)
  • Golubev, DmitryAalto-Yliopisto,Aalto University (author)
  • Linder, JacobNorges teknisk-naturvitenskapelige universitet (NTNU),Norwegian University of Science and Technology (NTNU) (author)
  • Bauch, Thilo,1972Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)bauch (author)
  • Lombardi, Floriana,1967Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)lombardi (author)
  • Chalmers tekniska högskolaUniversita Degli Studi Di Napoli Federico Ii (creator_code:org_t)

Related titles

  • In:Nature Communications: Springer Science and Business Media LLC8:12041-17232041-1723

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