Brownian dynamics approach to interacting magnetic moments

Kurzanzeige
dc.contributor.authorChubykalo, Oksanadeu
dc.contributor.authorSmirnov-Rueda, Romandeu
dc.contributor.authorGonzalez, J. M.deu
dc.contributor.authorWongsam, M. A.deu
dc.contributor.authorChantrell, Roy W.deu
dc.contributor.authorNowak, Ulrich
dc.date.accessioned2011-03-24T14:54:29Zdeu
dc.date.available2011-03-24T14:54:29Zdeu
dc.date.issued2003deu
dc.description.abstractThe question of how to introduce thermal fluctuations in the equation of motion of a magnetic system is addressed. Using the approach of the fluctuation-dissipation theorem we calculate the properties of the noise for both, the fluctuating field and the additive fluctuating torque (force) representation. In contrast to earlier calculations we consider the general case of a system of interacting magnetic moments. We show that the interactions do not result in any correlations of thermal fluctuations in the field representation and that the same widely used formula can be used in the most general case. We further prove that close to the equilibrium where the fluctuation-dissipation theorem is valid, both, field and additive torque (force) representations coincide, being different far away from it. We also show that the uncorrelated character of the noise is due to the form of the Landau-Lifshitz (or Gilbert) damping and under different damping formalisms, the normal mode analysis is proper.eng
dc.description.versionpublished
dc.format.mimetypeapplication/pdfdeu
dc.identifier.citationFirst publ. in: Journal of Magnetism and Magnetic Materials 266 (2003), 1-2, pp. 28-35deu
dc.identifier.doi10.1016/S0304-8853(03)00452-9
dc.identifier.ppn31373934Xdeu
dc.identifier.urihttp://kops.uni-konstanz.de/handle/123456789/5265
dc.language.isoengdeu
dc.legacy.dateIssued2009deu
dc.rightsterms-of-usedeu
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/deu
dc.subjectThermal fluctuationsdeu
dc.subjectMicromagnetic modellingdeu
dc.subject.ddc530deu
dc.titleBrownian dynamics approach to interacting magnetic momentseng
dc.typeJOURNAL_ARTICLEdeu
dspace.entity.typePublication
kops.citation.bibtex
@article{Chubykalo2003Brown-5265,
  year={2003},
  doi={10.1016/S0304-8853(03)00452-9},
  title={Brownian dynamics approach to interacting magnetic moments},
  number={1-2},
  volume={266},
  issn={0304-8853},
  journal={Journal of magnetism and magnetic materials},
  pages={28--35},
  author={Chubykalo, Oksana and Smirnov-Rueda, Roman and Gonzalez, J. M. and Wongsam, M. A. and Chantrell, Roy W. and Nowak, Ulrich}
}
kops.citation.iso690CHUBYKALO, Oksana, Roman SMIRNOV-RUEDA, J. M. GONZALEZ, M. A. WONGSAM, Roy W. CHANTRELL, Ulrich NOWAK, 2003. Brownian dynamics approach to interacting magnetic moments. In: Journal of magnetism and magnetic materials. 2003, 266(1-2), pp. 28-35. ISSN 0304-8853. Available under: doi: 10.1016/S0304-8853(03)00452-9deu
kops.citation.iso690CHUBYKALO, Oksana, Roman SMIRNOV-RUEDA, J. M. GONZALEZ, M. A. WONGSAM, Roy W. CHANTRELL, Ulrich NOWAK, 2003. Brownian dynamics approach to interacting magnetic moments. In: Journal of magnetism and magnetic materials. 2003, 266(1-2), pp. 28-35. ISSN 0304-8853. Available under: doi: 10.1016/S0304-8853(03)00452-9eng
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