p-wave triggered superconductivity in single-layer graphene on an electron-doped oxide superconductor

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2017
Autor:innen
Millo, Oded
Barbone, Matteo
Alpern, Hen
Kalcheim, Yoav
Sassi, Ugo
De Fazio, Domenico
Yoon, Duhee
Amado, Mario
Robinson, Jason W. A.
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Electron pairing in the vast majority of superconductors follows the Bardeen-Cooper-Schrieffer theory of superconductivity, which describes the condensation of electrons into pairs with antiparallel spins in a singlet state with an s-wave symmetry. Unconventional superconductivity was predicted in single-layer graphene (SLG), with the electrons pairing with a p-wave or chiral d-wave symmetry, depending on the position of the Fermi energy with respect to the Dirac point. By placing SLG on an electron-doped (non-chiral) d-wave superconductor and performing local scanning tunnelling microscopy and spectroscopy, here we show evidence for a p-wave triggered superconducting density of states in SLG. The realization of unconventional superconductivity in SLG offers an exciting new route for the development of p-wave superconductivity using two-dimensional materials with transition temperatures above 4.2 K.

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ISO 690DI BERNARDO, Angelo, Oded MILLO, Matteo BARBONE, Hen ALPERN, Yoav KALCHEIM, Ugo SASSI, Domenico DE FAZIO, Duhee YOON, Mario AMADO, Jason W. A. ROBINSON, 2017. p-wave triggered superconductivity in single-layer graphene on an electron-doped oxide superconductor. In: Nature communications. 2017, 8, 14024. eISSN 2041-1723. Available under: doi: 10.1038/ncomms14024
BibTex
@article{DiBernardo2017pwave-48009,
  year={2017},
  doi={10.1038/ncomms14024},
  title={p-wave triggered superconductivity in single-layer graphene on an electron-doped oxide superconductor},
  volume={8},
  journal={Nature communications},
  author={Di Bernardo, Angelo and Millo, Oded and Barbone, Matteo and Alpern, Hen and Kalcheim, Yoav and Sassi, Ugo and De Fazio, Domenico and Yoon, Duhee and Amado, Mario and Robinson, Jason W. A.},
  note={Article Number: 14024}
}
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