dc.contributor.author | COFFEY, WILLIAM THOMAS | |
dc.contributor.author | KALYMYKOV, YURI PETROVICH | |
dc.contributor.author | TITOV, SERGEY | |
dc.date.accessioned | 2009-06-17T12:12:10Z | |
dc.date.available | 2009-06-17T12:12:10Z | |
dc.date.issued | 2005 | |
dc.date.submitted | 2005 | en |
dc.identifier.citation | Titov, S. V.Kachkachi, H.Kalmykov, Y. P.Coffey, W. T. 'Magnetization dynamics of two interacting spins in an external magnetic field' in Physical Review B, 72, 13, (2005), pp 13442 - 13442 | en |
dc.identifier.other | Y | |
dc.identifier.other | Y | en |
dc.identifier.uri | http://hdl.handle.net/2262/30553 | |
dc.description | PUBLISHED | en |
dc.description.abstract | The longitudinal relaxation time of the magnetization of a system of two exchange coupled spins subjected to a strong magnetic field is calculated exactly by averaging the stochastic Gilbert-Landau-Lifshitz equation for the magnetization, i.e., the Langevin equation of the process, over its realizations, so reducing the problem to a system of linear differential-recurrence relations for the statistical moments (averaged spherical harmonics). The system is solved in the frequency domain by matrix-continued fractions, yielding the complete solution of the two-spin problem in external fields for all values of the damping and barrier height parameters. The magnetization relaxation time extracted from the exact solution is compared with the inverse relaxation rate from Langer?s theory of the decay of metastable states [J. S. Langer, Ann. Phys. (N.Y.) 54, 258 (1969)], which yields in the high barrier and intermediate-to-high damping limits the asymptotic behavior of the greatest relaxation time. | en |
dc.description.sponsorship | The support of this work by INTAS Project No. 01-2341
is gratefully acknowledged. S.V.T. thanks the University of
Versailles for the award of a Visiting Professorship. | en |
dc.format.extent | 13442 | en |
dc.format.extent | 13442 | en |
dc.format.extent | 157943 bytes | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en | en |
dc.publisher | American Physical Society | en |
dc.relation.ispartofseries | Physical Review B | en |
dc.relation.ispartofseries | 72 | en |
dc.relation.ispartofseries | 13 | en |
dc.rights | Y | en |
dc.subject | Electronic & Electrical Engineering | en |
dc.title | Magnetization dynamics of two interacting spins in an external magnetic field | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/wcoffey | |
dc.identifier.rssinternalid | 32208 | |