Low-Noise Diamond-Based D.C. Nano-SQUIDs
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-04-20 |
| Journal | ACS Applied Electronic Materials |
| Authors | Manjith Bose, Daniel L. Creedon, Anders J. Barlow, Michael Stuiber, Georgina M. Klemencic |
| Institutions | La Trobe University, The University of Melbourne |
| Citations | 4 |
Abstract
Section titled āAbstractāNanoscale superconducting quantum interference devices (nano-SQUIDs) with Dayem bridge junctions and a physical loop size of 50 nm have been engineered in boron-doped nanocrystalline diamond films using precision Ne-ion beam milling. In an unshunted device, the nonhysteretic operation can be maintained in an applied field exceeding 0.1 T with a high flux-to-voltage transfer function, giving a low flux noise at 1 kHz and a concurrent spin sensitivity of . At elevated magnetic fields, up to 2 T, flux modulation of the nano-SQUID output voltage is maintained but with an increase in period, attributed to an additional phase bias induced on the nano-SQUID loop by up to 16 vortices per period penetrating the nano-SQUID electrodes.