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Spatially correlated microstructure and superconductivity in polycrystalline boron-doped diamond

Dahlem, F., Achatz, P., Williams, Oliver Aneurin, Araujo, D., Bustarret, E. and Courtois, H. 2010. Spatially correlated microstructure and superconductivity in polycrystalline boron-doped diamond. Physical Review B: Condensed Matter and Materials Physics 82 (3) , 033306. 10.1103/PhysRevB.82.033306

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Scanning tunneling spectroscopies are performed below 100 mK on polycrystalline boron-doped diamond films characterized by transmission electron microscopy and transport measurements. We demonstrate a strong correlation between the local superconductivity strength and the granular structure of the films. The study of the spectral shape, amplitude, and temperature dependence of the superconductivity gap enables us to differentiate intrinsically superconducting grains that follow the BCS model, from grains showing a different behavior involving the superconducting proximity effect.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Additional Information: 4 pages.
Publisher: American Physical Society
ISSN: 1098-0121
Last Modified: 04 Jun 2017 03:12

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