Global and Local Superconductivity in Boron-Doped Granular Diamond (pages 2034–2040)
Gufei Zhang, Stuart Turner, Evgeny A. Ekimov, Johan Vanacken, Matias Timmermans, Tomás Samuely, Vladimir A. Sidorov, Sergei M. Stishov, Yinggang Lu, Bart Deloof, Bart Goderis, Gustaaf Van Tendeloo, Joris Van de Vondel and and Victor V. Moshchalkov
Article first published online: 16 DEC 2013 | DOI: 10.1002/adma.201304667
Strong granularity-correlated and intragrain modulations of the superconducting order parameter are demonstrated in heavily boron-doped diamond situated not yet in the vicinity of the metal-insulator transition. These modulations at the superconducting state (SC) and at the global normal state (NS) above the resistive superconducting transition, reveal that local Cooper pairing sets in prior to the global phase coherence.