Comparison of Ising Spin Glass Noise to Flux and Inductance Noise in SQUIDs

被引：27

作者：

Chen, Zhi ^{[1
,2
]}

Yu, Clare C. ^{[1
]}

机构：

[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 24期

关键词：

MAGNETIC FLUCTUATIONS; BEHAVIOR; PHASE; MODEL; DYNAMICS; FIELD;

D O I：

10.1103/PhysRevLett.104.247204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent experiments implicate spins on the surface of metals as the source of flux and inductance noise in SQUIDs. We present Monte Carlo simulations of 2D and 3D Ising spin glasses that produce magnetization noise S(M) consistent with flux noise. At low frequencies S(M) is a maximum at the critical temperature T(C) in three dimensions, implying that flux noise should be a maximum at T(C). The second spectra of the magnetization noise and the noise in the susceptibility are consistent with experimentally measured SQUID inductance noise.

引用

页数：4

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