Monotonic d-wave superconducting gap of the optimally doped Bi2Sr1.6La0.4CuO6 superconductor by laser-based angle-resolved photoemission spectroscopy
文献类型：期刊论文
| 作者 | Meng, JQ ; Zhang, WT ; Liu, GD ; Zhao, L ; Liu, HY ; Jia, XW ; Lu, W ; Dong, XL ; Wang, GL ; Zhang, HB ; Zhou, Y ; Zhu, Y ; Wang, XY ; Zhao, ZX ; Xu, ZY ; Chen, CT ; Zhou, XJ |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2009 |
| 卷号 | 79期号:2 |
| 关键词 | HIGH-TEMPERATURE SUPERCONDUCTORS CUPRATE SUPERCONDUCTORS SUPERFLUID DENSITY UNDERDOPED BI2212 ENERGY-GAP PSEUDOGAP BI2SR2CACU2O8+DELTA PHASE |
| ISSN号 | 1098-0121 |
| 通讯作者 | Zhou, XJ: Chinese Acad Sci, Natl Lab Superconduct, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We propose that the upper Hubbard band (electronlike) and the Zhang-Rice singlet band (holelike) are two essential components in describing low-energy excitations of electron-doped cuprate superconductors. We find that the gap between these two bands is significantly smaller than the charge-transfer gap measured by optics and is further reduced upon doping. This indicates that the charge fluctuation is strong and the system is in the intermediate correlation regime. A two-band model is derived. In the limit that the intraband and interband hopping integrals are equal to each other, this model is equivalent to the unconstrained t-J model with on-site Coulomb repulsions. |
| 收录类别 | SCI |
| 资助信息 | NSFC [10525417, 10734120]; MOST of China [2006CB601002, 2006CB921302] |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/42294]  |
| 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 | Meng, JQ,Zhang, WT,Liu, GD,et al. Monotonic d-wave superconducting gap of the optimally doped Bi2Sr1.6La0.4CuO6 superconductor by laser-based angle-resolved photoemission spectroscopy[J]. PHYSICAL REVIEW B,2009,79(2). |
| APA | Meng, JQ.,Zhang, WT.,Liu, GD.,Zhao, L.,Liu, HY.,...&Zhou, XJ.(2009).Monotonic d-wave superconducting gap of the optimally doped Bi2Sr1.6La0.4CuO6 superconductor by laser-based angle-resolved photoemission spectroscopy.PHYSICAL REVIEW B,79(2). |
| MLA | Meng, JQ,et al."Monotonic d-wave superconducting gap of the optimally doped Bi2Sr1.6La0.4CuO6 superconductor by laser-based angle-resolved photoemission spectroscopy".PHYSICAL REVIEW B 79.2(2009). |
入库方式： OAI收割
来源：物理研究所
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