Anisotropic three-dimensional magnetism in CaFe2As2

Show simple item record

dc.contributor.author McQueeney, R.J.
dc.contributor.author Diallo, S.O.
dc.contributor.author Antropov, V.P.
dc.contributor.author Samolyuk, G.D.
dc.contributor.author Broholm, C.
dc.contributor.author Ni, N.
dc.contributor.author Nandi, S.
dc.contributor.author Yethiraj, M.
dc.contributor.author Zaretsky, J.L.
dc.contributor.author Pulikkotil, J.J.
dc.contributor.author Kreyssig, A.
dc.contributor.author Lumsden, M.D.
dc.contributor.author Harmon, B.N.
dc.contributor.author Canfield, P.C.
dc.date.accessioned 2009-12-29T18:26:21Z
dc.date.available 2009-12-29T18:26:21Z
dc.date.issued 2008-11-28
dc.identifier.citation Physical Review Letters 28 Nov. 2008, vol.101, no.22, 227205 (4 pp.) en
dc.identifier.uri http://jhir.library.jhu.edu/handle/1774.2/33735
dc.description.abstract Inelastic neutron scattering measurements of the magnetic excitations in CaFe2As2 indicate that the spin wave velocity in the Fe layers is exceptionally large and similar in magnitude to the cuprates. However, the spin wave velocity perpendicular to the layers is at least half as large that in the layer, so that the magnetism is more appropriately categorized as anisotropic three-dimensional, in contrast to the two-dimensional cuprates. Exchange constants derived from band structure calculations predict spin wave velocities that are consistent with the experimental data. en
dc.description.provenance Submitted by Susan Vazakas (svazakas@jhu.edu) on 2009-12-29T16:31:22Z No. of bitstreams: 1 Broholm Anisotropic 2008.pdf: 486553 bytes, checksum: 8ac1e0730837092429b8ff4929956fb7 (MD5) en
dc.description.provenance Approved for entry into archive by David Reynolds(davidr@jhu.edu) on 2009-12-29T18:26:21Z (GMT) No. of bitstreams: 1 Broholm Anisotropic 2008.pdf: 486553 bytes, checksum: 8ac1e0730837092429b8ff4929956fb7 (MD5) en
dc.description.provenance Made available in DSpace on 2009-12-29T18:26:21Z (GMT). No. of bitstreams: 1 Broholm Anisotropic 2008.pdf: 486553 bytes, checksum: 8ac1e0730837092429b8ff4929956fb7 (MD5) Previous issue date: 2008-11-28 en
dc.language.iso en_US en
dc.publisher American Physical Society en
dc.subject neutron diffraction en
dc.subject spin dynamics en
dc.subject spin waves en
dc.subject magnetic superconductors en
dc.subject iron alloys en
dc.subject exchange interactions (electron) en
dc.subject calcium alloys en
dc.subject atomic force microscopy en
dc.subject anisotropic three-dimensional magnetism en
dc.subject magnetic excitations en
dc.subject inelastic neutron scattering en
dc.subject spin wave velocity en
dc.subject arsenic alloys en
dc.subject antiferromagnetism en
dc.subject ab initio calculations en
dc.subject two-dimensional cuprates en
dc.subject exchange constants en
dc.subject band structure calculations en
dc.subject CaFe2As2 en
dc.title Anisotropic three-dimensional magnetism in CaFe2As2 en
dc.type Article en

Files in this item

Files Size Format Download
Broholm Anisotropic 2008.pdf 486.5Kb application/pdf Download

This item appears in the following Collection(s)

Show simple item record