Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 43, Pages 15223-15227Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja104847q
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Funding
- Global COE for Materials Research and Education
- World Premier International Research Center (WPI) Initiative
- MEXT, Japan
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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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