Why didn't my superconducting diamond resonator work? Granular superconductivity in boron-doped diamond

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• Georgina Klemencic (Cardiff)
• Thursday 12 October 2017, 13:45-15:00
• Theory Library.

If you have a question about this talk, please contact Mike Gunn.

Superconductivity in boron-doped diamond was discovered in 2004 and seen to exist in both single-crystal and polycrystalline samples. This doped diamond retains its famous extreme mechanical properties and, as such, is anticipated to be a promising material for quantum device applications, as I will discuss.

In this talk I will describe my work, at Cardiff University, to characterise the superconducting properties of nanocrystalline boron-doped diamond films. I will show how the granularity of these samples presents itself as a dimensional crossover in the fluctuation conductivity -a phenomenon predicted by a Birmingham theorist – which allows us to extract physical properties of the material. I will also present new data indicating a possible superconducting glass phase, not previously reported in this material, and pose open questions about this material which could be addressed by theorists.

This talk is part of the Theoretical Physics Seminars series.

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• Bham Talks
• Theoretical Physics Seminars
• Theory Library
• What's on in Physics?

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