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arXiv · 1110.0102

The Diamond SQUID

Soumen Mandal·Tobias Bautze·Oliver A. Williams·Cécile Naud·Étienne Bustarret·Franck Omnès·Pierre Rodière·Tristan Meunier·Christopher Bäuerle·Laurent Saminadayar
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Abstract

Diamond is an electrical insulator in its natural form. However, when doped with boron above a critical level (~0.25 at.%) it can be rendered superconducting at low temperatures with high critical fields. Here we present the realization of a micrometer scale superconducting quantum interference device $μ$-SQUID made from nanocrystalline boron doped diamond (BDD) films. Our results demonstrate that $μ$-SQUIDs made from superconducting diamond can be operated in magnetic fields as large as 4T independent on the field direction. This is a decisive step towards the detection of quantum motion in a diamond based nanomechanical oscillator.

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Soumen Mandal, Tobias Bautze, Oliver A. Williams, Cécile Naud, Étienne Bustarret, Franck Omnès, Pierre Rodière, Tristan Meunier, Christopher Bäuerle, Laurent Saminadayar. 2011-10-01. The Diamond SQUID. https://doi.org/10.1021/nn2018396

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