Marginal Fermi liquid analysis of 300 K reflectance of Bi2Sr2CaCu2O8+delta
文献类型：期刊论文
| 作者 | Hwang, J ; Timusk, T ; Puchkov, AV ; Wang, NL ; Gu, GD ; Homes, CC ; Tu, JJ ; Eisaki, H |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2004 |
| 卷号 | 69期号:9 |
| 关键词 | T-C SUPERCONDUCTORS HIGH-TEMPERATURE SUPERCONDUCTORS NORMAL-STATE THIN-FILMS OPTICAL CONDUCTIVITY TUNNELING SPECTROSCOPY INFRARED PROPERTIES MAGNETIC-PROPERTIES PSEUDOGAP STATE RESISTIVITY |
| ISSN号 | 1098-0121 |
| 通讯作者 | Hwang, J: McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada. |
| 中文摘要 | We use 300 K reflectance data to investigate the normal-state electrodynamics of the high-temperature superconductor Bi2Sr2CaCu2O8+delta over a wide range of doping levels. The data show that at this temperature the free carriers are coupled to a continuous spectrum of fluctuations. Assuming the marginal Fermi-liquid (MFL) form as a first approximation for the fluctuation spectrum, the doping-dependent coupling constant lambda(p) can be estimated directly from the slope of the reflectance spectrum. We find that lambda(p) decreases smoothly with the hole doping level, from underdoped samples with p=0.103 (T-c=67 K) where lambda(p)=0.93 to overdoped samples with p=0.226 (T-c=60 K) where lambda(p)=0.53. An analysis of the intercept and curvature of the reflectance spectrum shows deviations from the MFL spectrum symmetrically placed at the optimal doping point p=0.16. The Kubo formula for the conductivity gives a better fit to the experiments with the MFL spectrum up to 2000 cm(-1) and with an additional Drude component or an additional Lorentz component up to 7000 cm(-1). By comparing three different model fits we conclude that the MFL channel is necessary for a good fit to the reflectance data. Finally, we note that the monotonic variation of the reflectance slope with doping provides us with an independent measure of the doping level for the Bi-2212 system. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41754]  |
| 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 | Hwang, J,Timusk, T,Puchkov, AV,et al. Marginal Fermi liquid analysis of 300 K reflectance of Bi2Sr2CaCu2O8+delta[J]. PHYSICAL REVIEW B,2004,69(9). |
| APA | Hwang, J.,Timusk, T.,Puchkov, AV.,Wang, NL.,Gu, GD.,...&Eisaki, H.(2004).Marginal Fermi liquid analysis of 300 K reflectance of Bi2Sr2CaCu2O8+delta.PHYSICAL REVIEW B,69(9). |
| MLA | Hwang, J,et al."Marginal Fermi liquid analysis of 300 K reflectance of Bi2Sr2CaCu2O8+delta".PHYSICAL REVIEW B 69.9(2004). |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。