Lee, C. H., Steffens, P., Qureshi, N., Nakajima, M., Kihou, K., Iyo, A., Eisaki, H. and Braden, M. (2013). Universality of the Dispersive Spin-Resonance Mode in Superconducting BaFe2As2. Phys. Rev. Lett., 111 (16). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114
Full text not available from this repository.Abstract
Spin fluctuations in superconducting BaFe2(As1-xPx)(2) (x = 0.34, T-c = 29.5 K) are studied using inelastic neutron scattering. Well-defined commensurate magnetic signals are observed at (pi, 0), which is consistent with the nesting vector of the Fermi surface. Antiferromagnetic (AFM) spin fluctuations in the normal state exhibit a three-dimensional character reminiscent of the AFM order in nondoped BaFe2As2. A clear spin gap is observed in the superconducting phase forming a peak whose energy is significantly dispersed along the c axis. The bandwidth of dispersion becomes larger with approaching the AFM ordered phase universally in all superconducting BaFe2As2, indicating that the dispersive feature is attributed to three-dimensional AFM correlations. The results suggest a strong relationship between the magnetism and superconductivity.
| Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||
| Creators: |
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| URN: | urn:nbn:de:hbz:38-473968 | ||||||||||||||||||||||||||||||||||||
| DOI: | 10.1103/PhysRevLett.111.167002 | ||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Phys. Rev. Lett. | ||||||||||||||||||||||||||||||||||||
| Volume: | 111 | ||||||||||||||||||||||||||||||||||||
| Number: | 16 | ||||||||||||||||||||||||||||||||||||
| Date: | 2013 | ||||||||||||||||||||||||||||||||||||
| Publisher: | AMER PHYSICAL SOC | ||||||||||||||||||||||||||||||||||||
| Place of Publication: | COLLEGE PK | ||||||||||||||||||||||||||||||||||||
| ISSN: | 1079-7114 | ||||||||||||||||||||||||||||||||||||
| Language: | English | ||||||||||||||||||||||||||||||||||||
| Faculty: | Unspecified | ||||||||||||||||||||||||||||||||||||
| Divisions: | Unspecified | ||||||||||||||||||||||||||||||||||||
| Subjects: | no entry | ||||||||||||||||||||||||||||||||||||
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| URI: | http://kups.ub.uni-koeln.de/id/eprint/47396 |
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