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Magnetic and Electronic Raman Scattering at the Nodal Spin-Density-Wave Transition in BaFe2As2

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arxiv 1010.6151 v1 pith:S5Y2JLAF submitted 2010-10-29 cond-mat.supr-con cond-mat.str-el

S. Sugai , Y. Mizuno , R. Watanabe , T. Kawaguchi , K. Takenaka , H. Ikuta , Y. Takayanagi , N. Hayamizu
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Y. Sone
This is my paper · ORCID
classification cond-mat.supr-concond-mat.str-el
keywords nodalbafe2as2electronicexcitationsramanscatteringstatetransition
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Two magnon excitations and the nodal spin density wave (SDW) gap were observed in BaFe2As2 by Raman scattering. Below the SDW transition temperature (TSDW) nodal SDW gap opens together with new excitations in reconstructed electronic states. The two-magnon peak remains above TSDW and moreover the energy increases a little. The change from the long-range ordered state to the short-range correlated state is compared to the cuprate superconductors.

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