Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 79, Issue 1, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.79.013706
Keywords
BaFe2As2; superconductivity; nuclear resonant inelastic scattering; partial phonon density of states
Categories
Funding
- JASRI [2009A1071]
- Ministry of Education, Culture, Sports, Science and Technology [20102005]
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The contribution of Fe atomic motion to the superconductivity in the K-doped BaFe2As2 system was investigated by Fe-57 nuclear resonant inelastic scattering. A significant K-doping effect was observed in the Fe partial phonon density of states. The present results indicate that low-lying Fe optical modes are softened by K-doping. This demonstrates that the Fe atomic motion correlates with the superconductivity in K-doped BaFe2As2.
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