Details

Autor(en) / Beteiligte

• Chen, Zhi
• Yu, Clare C

Titel

Comparison of Ising spin glass noise to flux and inductance noise in SQUIDs

Ist Teil von

• Physical review letters, 2010-06, Vol.104 (24), p.247204-247204, Article 247204

Ort / Verlag

United States

Erscheinungsjahr

2010

Quelle

American Physical Society

Beschreibungen/Notizen

• 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.