Infrared properties of La2-x(Ca,Sr)(x)CaCu2O6+delta single crystals
文献类型：期刊论文
| 作者 | Wang, NL ; Zheng, P ; Feng, T ; Gu, GD ; Homes, CC ; Tranquada, JM ; Gaulin, BD ; Timusk, T |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2003 |
| 卷号 | 67期号:13 |
| 关键词 | NEUTRON POWDER DIFFRACTION CHARGE DYNAMICS OPTICAL CONDUCTIVITY CUPRATE SUPERCONDUCTORS ELECTRONIC-STRUCTURE LA2-XSRXCUO4 STATE GAP SPECTROSCOPY PSEUDOGAP |
| ISSN号 | 1098-0121 |
| 通讯作者 | Wang, NL: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | The in-plane optical properties of two crystals of the bilayer cuprate La2-x(Ca,Sr)(x)CaCu2O6+delta, one with excess Ca and x=0.10 and the other with Sr and x=0.15, were investigated over the frequency range of 45-25 000 cm(-1). The optical conductivity has been derived from Kramers-Kronig transformation. Each crystal exhibits a peak at around 15 000 cm(-1), which corresponds to the charge-transfer (CT) excitation of the parent insulator. With increasing carrier density, spectral weight shifts from the CT excitation to the low-omega region. For the superconducting sample (x=0.15), the optical conductivity displays a peak in the far-infrared region, which shifts toward zero frequency with decreasing temperature. The temperature-dependent behavior favors a dynamical localization picture. A "pseudogap" feature is observed in the low-frequency reflectance and the scattering rate spectra. Both the energy scale and the temperature dependence of the pseudogap are similar to other bilayer cuprates. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/39954]  |
| 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, NL,Zheng, P,Feng, T,et al. Infrared properties of La2-x(Ca,Sr)(x)CaCu2O6+delta single crystals[J]. PHYSICAL REVIEW B,2003,67(13). |
| APA | Wang, NL.,Zheng, P.,Feng, T.,Gu, GD.,Homes, CC.,...&Timusk, T.(2003).Infrared properties of La2-x(Ca,Sr)(x)CaCu2O6+delta single crystals.PHYSICAL REVIEW B,67(13). |
| MLA | Wang, NL,et al."Infrared properties of La2-x(Ca,Sr)(x)CaCu2O6+delta single crystals".PHYSICAL REVIEW B 67.13(2003). |
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。