Optical spectroscopy study of Nd(O,F)BiS2 single crystals
文献类型：期刊论文
| 作者 | Wang, XB ; Nie, SM ; Wang, HP ; Zheng, P ; Wang, P ; Dong, T ; Weng, HM ; Wang, NL |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:5 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Wang, XB (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We present an optical spectroscopy study on F-substituted NdOBiS2 superconducting single crystals grown using the KCl/LiCl flux method. The measurement reveals a simple metallic response with a relatively low screened plasma edge near 5000 cm(-1). The plasma frequency is estimated to be 2.1 eV, which is much smaller than the value expected from the first-principles calculations for an electron doping level of x = 0.5, but very close to the value based on a doping level of 7% of itinerant electrons per Bi site as determined by the angle-resolved photoemission spectroscopy (ARPES) experiment. The energy scales of the interband transitions are also well reproduced by the first-principles calculations. The results suggest an absence of correlation effect in the compound, which essentially rules out the exotic pairing mechanism for superconductivity or scenario based on the strong electronic correlation effect. The study also reveals that the system is far from a charge-density wave (CDW) instability as being widely discussed for a doping level of x = 0.5. |
| 资助信息 | National Science Foundation of China [11120101003, 11327806]; 973 project of the Ministry of Science and Technology of China [2011CB921701, 2012CB821403] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59520]  |
| 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 | Wang, XB,Nie, SM,Wang, HP,et al. Optical spectroscopy study of Nd(O,F)BiS2 single crystals[J]. PHYSICAL REVIEW B,2014,90(5). |
| APA | Wang, XB.,Nie, SM.,Wang, HP.,Zheng, P.,Wang, P.,...&Wang, NL.(2014).Optical spectroscopy study of Nd(O,F)BiS2 single crystals.PHYSICAL REVIEW B,90(5). |
| MLA | Wang, XB,et al."Optical spectroscopy study of Nd(O,F)BiS2 single crystals".PHYSICAL REVIEW B 90.5(2014). |
入库方式： OAI收割
来源：物理研究所
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