Spin dependent electron-phonon interaction in SmFeAsO by low-temperature Raman spectroscopy

Details Spin dependent electron-phonon interaction in SmFeAsO by low-temperature Raman spectroscopy Spin dependent electron-phonon interaction in SmFeAsO by low-temperature Raman spectroscopy

2010-09-26

arxiv.org/abs/1009.5050v2

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1021/ja104847q

The interplay between spin dynamics and lattice vibration has been suggested as an important part of the puzzle of high-temperature superconductivity. Here we report the strong interaction between spin fluctuation and phonon in SmFeAsO, a parent compound of the iron arsenide family of superconductors, revealed by low-temperature Raman spectroscopy. Anomalous zone-boundary-phonon Raman scattering from spin superstructure was observed at temperatures below the antiferromagnetic ordering point, which offers compelling evidence on spin dependent electron-phonon coupling in pnictides.

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