The Diamond Superconducting Quantum Interference Device
- 4 August 2011
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 5 (9), 7144-7148
- https://doi.org/10.1021/nn2018396
Abstract
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.Keywords
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