dc.contributor.author | EDERER, CLAUDE | |
dc.date.accessioned | 2009-07-07T15:30:49Z | |
dc.date.available | 2009-07-07T15:30:49Z | |
dc.date.issued | 2003 | |
dc.date.submitted | 2003 | en |
dc.identifier.citation | Moran, S., Ederer, C., Fahnle, M. 'Ab initio electron theory for magnetism in Fe: Pressure dependence of spin-wave energies, exchange parameters, and Curie temperature' in Physical Review B - Condensed Matter and Materials Physics, 67, (1), 2003, pp 124071 - 124074 | en |
dc.identifier.issn | http://dx.doi.org/10.1103/PhysRevB.67.012407 | |
dc.identifier.other | Y | |
dc.identifier.other | Y | en |
dc.description | PUBLISHED | en |
dc.description.abstract | The spin-wave spectra for bcc Fe at various lattice constants are calculated by the ab initio density functional electron theory for various lattice constants, and the exchange parameters of a Heisenberg model are determined from the data. The spin-wave energies increase with decreasing lattice constant, and the behavior of the exchange parameters can by no means be described by the Bethe-Slater curve for an effective nearest-neighbor Heisenberg model. From the spin-wave frequencies the pressure dependence of the Curie temperature is derived in mean-field and random-phase approximation, yielding ?TcMF/?p?1.6 K/kbar and ?TcRPA/?p ?1.8 K/kbar, in contrast to the experimental result ?Tc/?p?0. Possible reasons for this discrepancy are discussed. | en |
dc.description.sponsorship | The authors are indebted to O. Grotheer and J. Ku?bler for
helpful discussions. | en |
dc.format.extent | 124071 | en |
dc.format.extent | 124074 | en |
dc.format.extent | 55784 bytes | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en | en |
dc.publisher | American Physical Society | en |
dc.relation.ispartofseries | Physical Review B - Condensed Matter and Materials Physics | en |
dc.relation.ispartofseries | 67 | en |
dc.relation.ispartofseries | 1 | en |
dc.rights | Y | en |
dc.subject | Physics | en |
dc.title | Ab initio electron theory for magnetism in Fe: Pressure dependence of spin-wave energies, exchange parameters, and Curie temperature | 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/edererc | |
dc.identifier.uri | http://hdl.handle.net/2262/31416 | |