The Diamond Superconducting Quantum Interference Device

doi:10.1021/nn2018396

The Diamond Superconducting Quantum Interference Device

2011-08-04

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DOI：10.1021/nn2018396

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Diamond is an electrical insulator in its natural form. However, when doped with boron above a critical level (similar to 0.25 atom %) 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 (mu-SQUID) made from nanocrystalline boron-doped diamond (BDD) films. Our results demonstrate that mu-SQUIDs made from superconducting diamond can be operated in magnetic fields as large as 41 Independent of the field direction. This is a decisive step toward the detection of quantum motion in a diamond-based nanomechanical oscillator.

Keyword:

diamond

SQUID

superconductivity

nanofabrication

The Diamond Superconducting Quantum Interference Device

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