Journal
PHYSICAL REVIEW B
Volume 78, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.060503
Keywords
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Funding
- T.L.L. Temple Foundation
- J.J. and R. Moores Endowment
- State of Texas
- USAF Office of Scientific Research
- LBNL
- NSF [CHE-0616805]
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Polarized Raman spectra of nonsuperconducting SrFe(2)As(2) and superconducting K(0.4)Sr(0.6)Fe(2)As(2) (T(c)=37 K) microcrystals are reported. All four-phonon modes (A(1g)+B(1g)+2E(g)) allowed by symmetry are found and identified. Shell model gives reasonable description of the spectra. No detectable anomalies are observed near the tetragonal-to-orthorhombic transition in SrFe(2)As(2) or the superconducting transition in K(0.4)Sr(0.6)Fe(2)As(2).
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