YBCO step-edge junction DC-squid planar gradiometer

Authors
Han, B Chen, GH Xu, FZ Zhao, SP Yang, QS
Citation
B. Han et al., YBCO step-edge junction DC-squid planar gradiometer, ACT PHY C E, 49(10), 2000, pp. 2051-2054
Citations number
17
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA SINICA
ISSN journal
10003290 → ACNP
Volume
49
Issue
10
Year of publication
2000
Pages
2051 - 2054
Database
ISI
SICI code
1000-3290(200010)49:10<2051:YSJDPG>2.0.ZU;2-O
Abstract
A de-SQUID planar gradiometer has been fabricated with YBa2C3O7-delta step- edge Josephson junctions on a 10 mm X 10 mm single crystal SrTiO3[100] subs trate. The gradiometer has a pair of pickup loops with an area of 33 mm(2) and the baseline of 4.5 mm. The system operates well in unshielded environm ent. A rejection of common mode fields of 1.4 x 10(2) in all directions and a field gradient sensitivity (white noise) better than 8 pT/cm root Hz at 77 K have been achieved.