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Quantum Transport in Boron-Doped Nanocrystalline Diamond

✍ Scribed by Jiří J. Mareš; Pavel Hubík; Jozef Krištofik; Dobroslav Kindl; Miloš Nesládek

Book ID
102133721
Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
397 KB
Volume
14
Category
Article
ISSN
0948-1907

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✦ Synopsis

Abstract

Highly grained thin films of boron‐doped diamond are grown by plasma‐enhanced (PE)CVD. Diamond nucleation surface treatment is discussed, together with its relation to the morphology, topology, and phase composition of the layers. The influence of the random incorporation of boron atoms in a diamond lattice is described in terms of Mott's metal and the weak localization (WL) transport mechanism. Starting from these concepts and from the experimental transport data, we build up a simple original theory of the superconductivity in boron‐doped diamond that is based on a spinflip pairing mechanism. We analyze an influence of the grain boundaries in nanocrystalline diamond (NCD) on superconductivity‐related quantum transport phenomena, and show a decisive role of the weak links created by point contacts between grains.

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