LOW-FREQUENCY SUPPRESSION OF RANDOM-TELEGRAPH-NOISE SPECTRA IN HIGH-TEMPERATURE SUPERCONDUCTORS

被引：2
|
作者：
ASHKENAZY, VD
JUNG, G
KHALFIN, IB
SHAPIRO, BY
机构：
[1] BEN GURION UNIV NEGEV,DEPT PHYS,IL-84105 BEER SHEVA,ISRAEL
[2] POLISH ACAD SCI,INST FIZUKI,PL-02668 WARSAW,POLAND
[3] BAR ILAN UNIV,JACK & PEARL RESNIK INST ADV TECHNOL,IL-52100 RAMAT GAN,ISRAEL
来源：
PHYSICAL REVIEW B | 1995年 / 51卷 / 02期
关键词：
D O I：
10.1103/PhysRevB.51.1236
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Interaction of the random-telegraph-noise signals with pinned Abrikosov vortices in granular high-temperature superconductors is investigated. It is shown that the low-frequency part of random-noise spectra is suppressed due to interaction of Abrikosov vortices with pinning centers at low magnetic fields and/or due to mutual interactions of vortices in an Abrikosov lattice at high magnetic fields. Values of characteristic frequencies below which spectra are suppressed are evaluated for various experimental configurations including a typical experimental thin-film strip geometry. It is shown that characteristic frequencies and the functional dependence of the low-frequency part of the noise spectra strongly depend on the external magnetic field. © 1995 The American Physical Society.
引用
收藏
页码：1236 / 1244
页数：9
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