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Finite versus zero-temperature hysteretic behavior of spin glasses: Experiment and theory
Theoretische Physik, ETH Zürich.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
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2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 76, no 9, 092408- p.Article in journal (Refereed) Published
Abstract [en]

Wepresent experimental results attempting to fingerprint nonanalyticities in the magnetizationcurves of spin glasses found by Katzgraber et al. [Phys. Rev.Lett. 89, 257202 (2002)] via zero-temperature Monte Carlo simulations ofthe Edwards-Anderson Ising spin glass. Our results show that thesingularities at zero temperature due to the reversal-field memory effectare washed out by the finite temperatures of the experiments.The data are analyzed via the first order reversal curve(FORC) magnetic fingerprinting method. The experimental results are supported byMonte Carlo simulations of the Edwards-Anderson Ising spin glass atfinite temperatures which agree qualitatively very well with the experimentalresults. This suggests that the hysteretic behavior of real Isingspin-glass materials is well described by the Edwards-Anderson Ising spinglass. Furthermore, reversal-field memory is a purely zero-temperature effect.

Place, publisher, year, edition, pages
2007. Vol. 76, no 9, 092408- p.
Keyword [en]
magnetic hysteresis, magnetisation, Monte Carlo methods, spin glasses
National Category
Physical Sciences Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-14876DOI: 10.1103/PhysRevB.76.092408ISI: 000249786100022OAI: oai:DiVA.org:uu-14876DiVA: diva2:42647
Available from: 2008-01-31 Created: 2008-01-31 Last updated: 2017-12-11Bibliographically approved

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Nordblad, Per

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