Chin. Phys. Lett.  2008, Vol. 25 Issue (6): 2225-2227    DOI:
Articles |
Angle Integrated Photoemission Study of SmO0.85F0.15FeAs
OU Hong-Wei1;ZHAO Jia-Feng1;ZHANG Yan1;SHEN Da-Wei1;ZHOU Bo1;YANG
Le-Xian1;HE Cheng1;CHEN Fei1;XU Min1;WU Tao2;CHEN Xian-Hui2;CHEN Yan1;FENG Dong-Lai1
1Department of Physics, Surface Physics Laboratory (National Key Laboratory), and Advanced Materials Laboratory, Fudan University, Shanghai 2004332Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei 230026
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OU Hong-Wei, ZHAO Jia-Feng, ZHANG Yan et al  2008 Chin. Phys. Lett. 25 2225-2227
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Abstract The electronic structure of the new superconductor SmO1-xFxFeAs (x=0.15) is studied by angle-integrated photoemission spectroscopy. Our data show a sharp feature very close to the Fermi energy, and a relative flat distribution of the density of states between 0.5eV and 3eV binding energy, which agrees well with the band structure calculations considering an antiferromagnetic ground state. No noticeable gap opening is observed at 12K below the
superconducting transition temperature, indicating the existence of large ungapped regions in the Brillouin zone.
Keywords: 74.25.Jb      74.70.Dd      79.60.-i     
Received: 02 May 2008      Published: 31 May 2008
PACS:  74.25.Jb (Electronic structure (photoemission, etc.))  
  74.70.Dd (Ternary, quaternary, and multinary compounds)  
  79.60.-i (Photoemission and photoelectron spectra)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I6/02225
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Articles by authors
OU Hong-Wei
ZHAO Jia-Feng
ZHANG Yan
SHEN Da-Wei
ZHOU Bo
YANGLe-Xian
HE Cheng
CHEN Fei
XU Min
WU Tao
CHEN Xian-Hui
CHEN Yan
FENG Dong-Lai
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[cond-mat.supr-con]
[7] Boeri L, Dolgov O V and Golubov A A 2008 arXiv:0803.2703
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[8]Dai X, Fang Z, Zhou Y and Zhang F C 2008 arXiv:0803.3982
[cond-mat.supr-con]
[9]Han Q, Chen Y and Wang Z D 2008 arXiv:0803.4346
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[10]Mazin I I, Singh D J, Johannes M D and Du M H 2008arXiv:0803.2740
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[12]Singh D J and Du M H 2008 arXiv:0803.0429
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[13]Xu G, Ming W, Yao Y, Dai X and Fang Z 2008 arXiv:0803.1282
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[14]Cao C, Hirschfeld P J and Cheng H P 2008 arXiv:0803.3236
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