LOW-TEMPERATURE NOISE OF THE MAGNETIC-FLUX IN HTSC SQUIDS

被引:0
|
作者
SHNYRKOV, VI [1 ]
TIMOFEEV, VP [1 ]
TSOY, GM [1 ]
KHLUS, VA [1 ]
DEMIN, AV [1 ]
机构
[1] NATL ACAD SCI UKRAINE,INST MONOCRYST,KHARKOV 310141,UKRAINE
来源
FIZIKA NIZKIKH TEMPERATUR | 1995年 / 21卷 / 06期
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O59 [应用物理学];
学科分类号
摘要
We have studied low frequency fluctuations of the magnetic flux in HTSC films and SQUIDs. It Is have shown that in weak magnetic fields the 1/f-type noise in epitaxial HTSC samples is associated with discrete Josephson fluctuators consisting of a superconducting circuit closed by weak links. It has been round by numerical analysis that the presence of such fluctuators accounts for some unusual effects;occurring in electronic devices based on HTSC. It is also Shown that the best type of the contact, in terms of minimization of this noise mechanism, is at present that at the bicrystal boundary.
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页码:604 / 612
页数:9
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