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Neutron scattering study of spin dynamics in superconducting (Tl,Rb)2Fe4Se5.
- Source :
-
Physical Review B: Condensed Matter & Materials Physics . Mar2013, Vol. 87 Issue 10, p100501-1-100501-5. 5p. - Publication Year :
- 2013
-
Abstract
- We observed in superconducting (Tl,Rb)2Fe4Se5 spin-wave branches that span an energy range from 6.5 to 209 meV. Spin dynamics are successfully described by a Heisenberg localized spin model whose dominant in-plane interactions include only the nearest (J1 and J1') and next nearest neighbor (J2 and J2') exchange terms within and between the tetramer spin blocks, respectively. These experimentally determined exchange constants would crucially constrain the theoretical viewpoints on magnetism and superconductivity in the Fe-based materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10980121
- Volume :
- 87
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Physical Review B: Condensed Matter & Materials Physics
- Publication Type :
- Academic Journal
- Accession number :
- 87337499
- Full Text :
- https://doi.org/10.1103/PhysRevB.87.100501