Global and Local Superconductivity in Boron-Doped Granular Diamond

Global and Local Superconductivity in Boron-Doped Granular Diamond

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)...

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Veröffentlicht in:Advanced materials (Weinheim) 2014-04, Vol.26 (13), p.2034-2040
Hauptverfasser: Zhang, Gufei, Turner, Stuart, Ekimov, Evgeny A., Vanacken, Johan, Timmermans, Matias, Samuely, Tomás, Sidorov, Vladimir A., Stishov, Sergei M., Lu, Yinggang, Deloof, Bart, Goderis, Bart, Van Tendeloo, Gustaaf, Van de Vondel, Joris, Moshchalkov, Victor V.
Format: Artikel
Sprache:eng
Schlagworte:
diamond
Diamonds
granular disorder
Metal-insulator transition
Modulation
Order parameters
Phase coherence
substitutional boron doping
Superconductivity
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Beschreibung
Zusammenfassung: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.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201304667