2011/02/16 by K. Kechedzhi, Kostyantyn Kechedzhi, Kechedzhi, K. +5
Physics and Astronomy · #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.1102.3445
arxiv created 2011/02/16 · openalex publication_date 2011/02/16 · arxiv updated 2011/02/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We analyze recent data on the complex inductance of dc SQUIDs that show 1/f inductance noise highly correlated with conventional 1/f flux noise. We argue that these data imply a formation of long range order in fractal spin structures. We show that these structures appear naturally in a random system of spins with wide distribution of spin-spin interactions. We perform numerical simulations on the simplest model of this type and show that it exhibits 1/f1+ζ magnetization noise with small exponent ζ and reproduces the correlated behavior observed experimentally.