Journal article
High energy spin excitations in BaFe2As2
- Abstract:
- We report neutron scattering measurements of cooperative spin excitations in antiferromagnetically ordered BaFe2As2, the parent phase of an iron pnictide superconductor. The data extend up to ~100meV and show that the spin excitation spectrum is sharp and highly dispersive. By fitting the spectrum to a linear spin-wave model we estimate the magnon bandwidth to be in the region of 0.17eV. The large characteristic spin fluctuation energy suggests that magnetism could play a role in the formation of the superconducting state.
- Publication status:
- Published
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- Publisher copy:
- 10.1103/PhysRevB.78.220501
Authors
- Journal:
- Phys. Rev. B More from this journal
- Volume:
- 78
- Issue:
- 22
- Pages:
- 220501
- Publication date:
- 2008-08-21
- DOI:
- EISSN:
-
1550-235X
- ISSN:
-
1098-0121
- Language:
-
English
- Keywords:
- Pubs id:
-
pubs:29551
- UUID:
-
uuid:1732db32-3e38-4d9c-b7d5-71403c3b3c63
- Local pid:
-
pubs:29551
- Source identifiers:
-
29551
- Deposit date:
-
2012-12-19
- ARK identifier:
Terms of use
- Copyright date:
- 2008
- Notes:
-
4 pages, 4 figures; v2: minor changes to the text and abstract and
more general expressions for the linear spin-wave cross section included
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