期刊
PHYSICAL REVIEW B
卷 80, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.100507
关键词
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资金
- NSFC
- CAS
- 973 project of the MOST of China
We report an optical investigation on the ab plane charge dynamics for Na1-delta FeAs single crystal. Formation of a partial energy gap is clearly observed in the magnetic ordered phase. Comparing with the optical response of other FeAs-based parent compounds with high magnetic transition temperatures, both the gap value 2 Delta and the energy scale for the gap-induced spectral weight redistribution are smaller in Na1-delta FeAs. The experimental results favor an itinerant origin of the antiferromagnetic transition.
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