YBa 2 Cu 3 O 7 Bicrystal Josephson Junctions and dc SQUIDs

Autor:	Yueliang Zhou, Tao Yang, Bai-ru Zhao, Lin Li, Yu V Kislinskii, Pei-jun Wu, Ying-fei Chen, Zhongxian Zhao, Lie Chen, Bo Xu, Evgeni Stepantsov, J.J Sun, F. Wu, Z.Q. Peng
Rok vydání:	1996
Předmět:	Superconductivity Josephson effect Materials science Condensed matter physics Direct current General Physics and Astronomy chemistry.chemical_element Yttrium Magnetic field law.invention Pi Josephson junction SQUID chemistry law Thin film
Zdroj:	Chinese Physics Letters. 13:390-393
ISSN:	1741-3540 0256-307X
Popis:	Bicrystal Josephson junctions and direct current superconducting quantum interference devices (dc SQUIDs) were prepared on YBa(a)2Cu(3)O(7) (YBCO) thin films deposited on yttrium stabilized ZrO2 bicrystal substrates. The critical current densities j(c) similar to 2 x 10(6) A/cm(2) for YBCO thin film and (1-3) x 10(3) A/cm(2) at boundaries were obtained at 77K. For YBCO Josephson junction made on 28 degrees misorientated boundary, the Shapiro steps were observed. The dc SQUID was made on the 32 degrees misorientated boundary junctions, which consisted of 40 x 40 mu m of loop and 2000 x 2000 mu m planar superconductive flux focuser. The voltage modulation depth of this SQUID was 6 mu V, and the magnetic field sensitivity to be similar to 2 pT/root Hz from the measured noise level.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f326ddf292d13255432240bdba6adcbe https://doi.org/10.1088/0256-307x/13/5/019 Zobrazit plný text záznamu