305 citations · 586 across the 7 of their papers we have counts for
7 papers
Random-Field Ising Models of Hysteresis
James P. Sethna, Karin A. Dahmen, Olga Perkovic
This is a review article of our work on hysteresis, avalanches, and criticality. We provide an extensive introduction to scaling and renormalization--group ideas, and discuss analy…
Hysteresis, Avalanches, and Noise: Numerical Methods
Matthew C. Kuntz, Olga Perkovic, Karin A. Dahmen +2
In studying the avalanches and noise in a model of hysteresis loops we have developed two relatively straightforward algorithms which have allowed us to study large systems efficie…
Disorder-Induced Critical Phenomena in Hysteresis: Numerical Scaling in Three and Higher Dimensions
Olga Perkovic, Karin A. Dahmen, James P. Sethna
We present numerical simulations of avalanches and critical phenomena associated with hysteresis loops, modeled using the zero-temperature random-field Ising model. We study the tr…
Hysteresis, Avalanches, and Barkhausen Noise
James P. Sethna, Olga Perkovic, Karin A. Dahmen
Hysteresis, the lag between the force and the response, is often associated with noisy, jerky motion which have recently been called ``avalanches''. The interesting question is why…
Improved Magnetic Information Storage using Return-Point Memory
Olga Perkovic, James P. Sethna
The traditional magnetic storage mechanisms (both analog and digital) apply an external field signal H(t) to a hysteretic magnetic material, and read the remanent magnetization M(t…
Disorder-Induced Critical Phenomena in Hysteresis: A Numerical Scaling Analysis
Olga Perkovic, Karin A. Dahmen, James P. Sethna
Experimental systems with a first order phase transition will often exhibit hysteresis when out of equilibrium. If defects are present, the hysteresis loop can have different shape…
Avalanches, Barkhausen Noise, and Plain Old Criticality
Olga Perković, Karin Dahmen, James P. Sethna
We explain Barkhausen noise in magnetic systems in terms of avalanches near a plain old critical point in the hysteretic zero-temperature random-field Ising model. The avalanche si…