Abstract
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 nanometers, allowing for the unique observation of d-wave Andreev-pair interferences in YBa2Cu3O7-graphene devices that behave as a Fabry-Perot 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 demonstration is pivotal to the study of exotic directional effects expected for nodal superconductivity in Dirac materials.
| Original language | English |
|---|---|
| Article number | 087002 |
| Journal | Physical Review Letters |
| Volume | 125 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 21 Aug 2020 |
| Externally published | Yes |