Low-lying quasiparticle states and hidden collective charge instabilities in parent cobaltate superconductors
文献类型：期刊论文
| 作者 | Qian, D ; Hsieh, D ; Wray, L ; Chuang, YD ; Fedorov, A ; Wu, D ; Luo, JL ; Wang, NL ; Viciu, L ; Cava, RJ ; Hasan, MZ |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2006 |
| 卷号 | 96期号:21 |
| 关键词 | ANGLE-RESOLVED PHOTOEMISSION ELECTRONIC-STRUCTURE |
| ISSN号 | 0031-9007 |
| 通讯作者 | Qian, D: Princeton Univ, Joseph Henry Labs, Dept Phys, Princeton, NJ 08544 USA. |
| 中文摘要 | We report a state-of-the-art photoemission (angle-resolved photoemission spectroscopy) study of high quality single crystals of the NaxCoO2 series focusing on the fine details of the low-energy states. The Fermi velocity is found to be small (< 0.5 eV angstrom) and only weakly anisotropic over the Fermi surface at all dopings, setting the size of the pair wave function to be on the order of 10-20 nm. In the low-doping regime, the exchange interlayer splitting vanishes and two-dimensional collective instabilities such as 120 degrees-type fluctuations become kinematically allowed. Our results suggest that the unusually small Fermi velocity and the unique symmetry of kinematic instabilities distinguish cobaltates from most other oxide superconductors. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41041]  |
| 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 | Qian, D,Hsieh, D,Wray, L,et al. Low-lying quasiparticle states and hidden collective charge instabilities in parent cobaltate superconductors[J]. PHYSICAL REVIEW LETTERS,2006,96(21). |
| APA | Qian, D.,Hsieh, D.,Wray, L.,Chuang, YD.,Fedorov, A.,...&Hasan, MZ.(2006).Low-lying quasiparticle states and hidden collective charge instabilities in parent cobaltate superconductors.PHYSICAL REVIEW LETTERS,96(21). |
| MLA | Qian, D,et al."Low-lying quasiparticle states and hidden collective charge instabilities in parent cobaltate superconductors".PHYSICAL REVIEW LETTERS 96.21(2006). |
入库方式： OAI收割
来源：物理研究所
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