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Spin diffusion in double-exchange manganites
- Source :
- Physical review letters. 90(17)
- Publication Year :
- 2002
-
Abstract
- The theoretical study of spin diffusion in double-exchange magnets by means of dynamical mean-field theory is presented. We demonstrate that the spin-diffusion coefficient becomes independent of the Hund's coupling JH in the range of parameters JH*S >> W >> T, W being the bandwidth, relevant to colossal magnetoresistive manganites in the metallic part of their phase diagram. Our study reveals a close correspondence as well as some counterintuitive differences between the results on Bethe and hypercubic lattices. Our results are in accord with neutron scattering data and with previous theoretical work for high temperatures.<br />4.0 pages, 3 figures, RevTeX 4, replaced with the published version
- Subjects :
- Physics
Condensed Matter - Materials Science
Colossal magnetoresistance
Magnetoresistance
Condensed matter physics
Strongly Correlated Electrons (cond-mat.str-el)
General Physics and Astronomy
Materials Science (cond-mat.mtrl-sci)
FOS: Physical sciences
Condensed Matter - Strongly Correlated Electrons
Magnet
Spin diffusion
Condensed Matter::Strongly Correlated Electrons
Phase diagram
Subjects
Details
- ISSN :
- 00319007
- Volume :
- 90
- Issue :
- 17
- Database :
- OpenAIRE
- Journal :
- Physical review letters
- Accession number :
- edsair.doi.dedup.....0aa7701f8889e78a683003e9cbeff0bb