p-wave triggered superconductivity in single layer graphene on an electron-doped oxide superconductor
Abstract
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 is predicted in single layer graphene where the electrons pair 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 single layer graphene 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 single layer graphene. The realization of unconventional superconductivity in single layer graphene offers an exciting new route for the development of p-wave superconductivity using two-dimensional materials with transition temperatures above 4.2 K.
Keywords
Cite
@article{arxiv.1702.01572,
title = {p-wave triggered superconductivity in single layer graphene on an electron-doped oxide superconductor},
author = {Angelo Di Bernardo and Oded Millo and Matteo Barbone and Hen Alpern and Yoav Kalcheim and Ugo Sassi and Anna Ott and Domenico De Fazio and Duhee Yoon and Mario Amado and Andrea C. Ferrari and Jacob Linder and Jason W. A. Robinson},
journal= {arXiv preprint arXiv:1702.01572},
year = {2017}
}