Properties of grooved Dayem bridge based YBa2Cu3O7-δ superconducting quantum interference devices and magnetometers

被引：20

作者：

Trabaldo, E. ^{[1
]}

Ruffieux, S. ^{[1
]}

Andersson, E. ^{[1
]}

Arpaia, R. ^{[1
,2
]}

Montemurro, D. ^{[1
,5
]}

Schneiderman, J. F. ^{[3
,4
]}

Kalaboukhov, A. ^{[1
]}

Winkler, D. ^{[1
]}

Lombardi, F. ^{[1
]}

Bauch, T. ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Microtechnol & Nanosci, Quantum Device Phys Lab, SE-41296 Gothenburg, Sweden

[2] Politecn Milan, Dipartimento Fis, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

[3] Univ Gothenburg, Sahlgrenska Acad, MedTech West, SE-40530 Gothenburg, Sweden

[4] Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci & Physiol, SE-40530 Gothenburg, Sweden

[5] Univ Napoli Federico II, Dipartimento Fis, Via Cinthia, I-80126 Naples, Italy

来源：

APPLIED PHYSICS LETTERS | 2020年 / 116卷 / 13期

基金：

瑞典研究理事会;

关键词：

DC; SQUID; NOISE;

D O I：

10.1063/5.0001805

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The transport properties of a YBa2Cu3-delta superconducting quantum interference device (SQUID) based on grooved Dayem bridge weak links are studied as a function of temperature: at high temperatures (60 = 89 K), the weak links show properties similar to superconductor-normal conductor-superconductor junctions, while at temperatures below 60K, the weak links behave like short Dayem bridges. Using these devices, we have fabricated SQUID magnetometers with galvanically coupled in-plane pickup loops: at T=77K, magnetic field white noise levels as low as 63 fT/Hz have been achieved.

引用

页数：5

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