Low-Noise Diamond-Based D.C. Nano-SQUIDs
Low-Noise Diamond-Based D.C. Nano-SQUIDs
复制标题
低噪声金刚石基直流纳米 SQUID
DOI:
10.1021/acsaelm.2c00048
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发表时间:
2022
影响因子:
4.7
通讯作者:
Bose M
中科院分区:
文献类型:
--
作者:
Bose M
Nanoscale 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 noiseat 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.
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