Recent experiments have shown that proximity with high-temperature superconductors induces unconventional superconducting correlations in graphene. Here we demonstrate that those correlations propagate hundreds of nanometer, allowing for the unique observation of d-wave Andreev pair interferences in YBa2Cu3O7-graphene devices that behave as a Fabry-P\'erot cavity. The interferences show as a series of pronounced conductance oscillations analogous to those originally predicted by de Gennes--Saint-James for conventional metal-superconductor junctions. The present work is pivotal to the study of exotic directional effects expected for nodal superconductivity in Dirac materials.
@article{arxiv.2002.10173,
title = {Long-Range Propagation and Interference of $d$-wave Superconducting Pairs in Graphene},
author = {D. Perconte and K. Seurre and V. Humbert and C. Ulysse and A. Sander and J. Trastoy and V. Zatko and F. Godel and P. R. Kidambi and S. Hofmann and X. P. Zhang and D. Bercioux and F. S. Bergeret and B. Dlubak and P. Seneor and Javier E. Villegas},
journal= {arXiv preprint arXiv:2002.10173},
year = {2020}
}