Sökning: id:"swepub:oai:DiVA.org:his-22109" >
A many-body approac...
-
Karlsson, Krister,1961-Högskolan i Skövde,Institutionen för naturvetenskap
(författare)
A many-body approach to spin-wave excitations in itinerant magnetic systems
- Artikel/kapitelEngelska2000
Förlag, utgivningsår, omfång ...
-
2000-08-08
-
Institute of Physics Publishing (IOPP),2000
-
printrdacarrier
Nummerbeteckningar
-
LIBRIS-ID:oai:DiVA.org:his-22109
-
https://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-22109URI
-
https://doi.org/10.1088/0953-8984/12/34/308DOI
Kompletterande språkuppgifter
-
Språk:engelska
-
Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
-
Ämneskategori:ref swepub-contenttype
-
Ämneskategori:art swepub-publicationtype
Anmärkningar
-
Using a recently developed Green's function formalism, we have calculated the spin-wave spectra and dispersions in Ni and Fe. For Ni(100), the dispersion exhibits two branches as observed experimentally. The calculated higher optical branch is found to be too high in energy when the standard local density approximation band-structure is used but a very good agreement with the measured dispersion is obtained when the exchange splitting is reduced, to correspond to the experimental value of the exchange splitting. We also found a double branch along Ni(111) which is not observed experimentally. For Fe, the calculated dispersion surprisingly exposes a gap midway along Γ-N in disagreement with experimental data. However, an analysis of the temperature-dependent magnetization has predicted a similar gap at the same wave vector, supporting the present calculations.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Aryasetiawan, F.Joint Research Centre for Atom Technology - Angstrom Technology Partnership, 1-1-4 Higashi, Tsukuba, Ibaraki 305, Japan
(författare)
-
Högskolan i SkövdeInstitutionen för naturvetenskap
(creator_code:org_t)
Sammanhörande titlar
-
Ingår i:Journal of Physics: Institute of Physics Publishing (IOPP)12:34, s. 7617-76310953-89841361-648X
Internetlänk
Hitta via bibliotek
Till lärosätets databas