Pseudogap in underdoped Ba1-xKxFe2As2 as seen via optical conductivity
文献类型：期刊论文
| 作者 | Dai, YM ; Xu, B ; Shen, B ; Wen, HH ; Hu, JP ; Qiu, XG ; Lobo, RPSM |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:10 |
| 关键词 | SUPERCONDUCTIVITY PNICTIDES |
| ISSN号 | 1098-0121 |
| 通讯作者 | Dai, YM (reprint author), UPMC, CNRS, ESPCI ParisTech, LPEM, 10 Rue Vauquelin, F-75231 Paris 5, France. |
| 中文摘要 | We report the observation of a pseudogap in the ab-plane optical conductivity of underdoped Ba1-xKxFe2As2 (x = 0.2 and 0.12) single crystals. Both samples show prominent gaps opened by a spin density wave (SDW) order and superconductivity at the transition temperatures T-SDW and T-c, respectively. In addition, we observe an evident pseudogap below T* similar to 75 K, a temperature much lower than T-SDW but much higher than T-c. A spectral weight analysis shows that SDW competes with superconductivity while the pseudogap is closely connected to the superconducting gap, indicating the possibility of its being a precursor of superconductivity. The doping dependence of the gaps is also supportive of such a scenario. |
| 收录类别 | SCI |
| 资助信息 | ANR [BLAN07-1-183876 GAPSUPRA]; National Science Foundation of China [91121004]; Ministry of Science and Technology of China (973 Projects) [2011CBA00107, 2012CB821400, 2009CB929102]; Science and Technology Service of the French Embassy in China |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51576]  |
| 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 | Dai, YM,Xu, B,Shen, B,et al. Pseudogap in underdoped Ba1-xKxFe2As2 as seen via optical conductivity[J]. PHYSICAL REVIEW B,2012,86(10). |
| APA | Dai, YM.,Xu, B.,Shen, B.,Wen, HH.,Hu, JP.,...&Lobo, RPSM.(2012).Pseudogap in underdoped Ba1-xKxFe2As2 as seen via optical conductivity.PHYSICAL REVIEW B,86(10). |
| MLA | Dai, YM,et al."Pseudogap in underdoped Ba1-xKxFe2As2 as seen via optical conductivity".PHYSICAL REVIEW B 86.10(2012). |
入库方式： OAI收割
来源：物理研究所
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