Measurement of the c-Axis Optical Reflectance of AFe(2)As(2) (A = Ba, Sr) Single Crystals: Evidence of Different Mechanisms for the Formation of Two Energy Gaps
文献类型：期刊论文
| 作者 | Chen, ZG ; Dong, T ; Ruan, RH ; Hu, BF ; Cheng, B ; Hu, WZ ; Zheng, P ; Fang, Z ; Dai, X ; Wang, NL |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2010 |
| 卷号 | 105期号:9 |
| 关键词 | INPLANE SPECTRA |
| ISSN号 | 0031-9007 |
| 通讯作者 | Chen, ZG: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We present the c-axis optical reflectance measurement on single crystals of BaFe2As2 and SrFe2As2, the parent compounds of FeAs based superconductors. Different from the ab-plane optical response where two distinct energy gaps were observed in the spin-density-wave (SDW) state, only the smaller energy gap could be seen clearly for E parallel to c axis. The very pronounced energy gap structure seen at a higher energy scale for E parallel to ab plane is almost invisible. We propose a novel picture for the band structure evolution across the SDW transition and suggest different driving mechanisms for the formation of the two energy gaps. |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China; Chinese Academy of Sciences; Ministry of Science and Technology of China |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41829]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chen, ZG,Dong, T,Ruan, RH,et al. Measurement of the c-Axis Optical Reflectance of AFe(2)As(2) (A = Ba, Sr) Single Crystals: Evidence of Different Mechanisms for the Formation of Two Energy Gaps[J]. PHYSICAL REVIEW LETTERS,2010,105(9). |
| APA | Chen, ZG.,Dong, T.,Ruan, RH.,Hu, BF.,Cheng, B.,...&Wang, NL.(2010).Measurement of the c-Axis Optical Reflectance of AFe(2)As(2) (A = Ba, Sr) Single Crystals: Evidence of Different Mechanisms for the Formation of Two Energy Gaps.PHYSICAL REVIEW LETTERS,105(9). |
| MLA | Chen, ZG,et al."Measurement of the c-Axis Optical Reflectance of AFe(2)As(2) (A = Ba, Sr) Single Crystals: Evidence of Different Mechanisms for the Formation of Two Energy Gaps".PHYSICAL REVIEW LETTERS 105.9(2010). |
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来源：物理研究所
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