High energy spin excitations in BaFe2As2
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 t...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2008
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| _version_ | 1826260858366328832 |
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| author | Ewings, R Perring, T Bewley, R Guidi, T Pitcher, M Parker, DR Clarke, S Boothroyd, A |
| author_facet | Ewings, R Perring, T Bewley, R Guidi, T Pitcher, M Parker, DR Clarke, S Boothroyd, A |
| author_sort | Ewings, R |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-06T19:12:24Z |
| format | Journal article |
| id | oxford-uuid:1732db32-3e38-4d9c-b7d5-71403c3b3c63 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:12:24Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:1732db32-3e38-4d9c-b7d5-71403c3b3c632022-03-26T10:35:50ZHigh energy spin excitations in BaFe2As2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1732db32-3e38-4d9c-b7d5-71403c3b3c63EnglishSymplectic Elements at Oxford2008Ewings, RPerring, TBewley, RGuidi, TPitcher, MParker, DRClarke, SBoothroyd, AWe 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. |
| spellingShingle | Ewings, R Perring, T Bewley, R Guidi, T Pitcher, M Parker, DR Clarke, S Boothroyd, A High energy spin excitations in BaFe2As2 |
| title | High energy spin excitations in BaFe2As2 |
| title_full | High energy spin excitations in BaFe2As2 |
| title_fullStr | High energy spin excitations in BaFe2As2 |
| title_full_unstemmed | High energy spin excitations in BaFe2As2 |
| title_short | High energy spin excitations in BaFe2As2 |
| title_sort | high energy spin excitations in bafe2as2 |
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