Electron-spin excitation coupling in an electron-doped copper oxide superconductor
文献类型：期刊论文
| 作者 | Zhao, J ; Niestemski, FC ; Kunwar, S ; Li, SL ; Steffens, P ; Hiess, A ; Kang, HJ ; Wilson, SD ; Wang, ZQ ; Dai, PC ; Madhavan, V |
| 刊名 | NATURE PHYSICS
 |
| 出版日期 | 2011 |
| 卷号 | 7期号:9页码:719 |
| 关键词 | TRANSITION-TEMPERATURE SUPERCONDUCTOR BI2SR2CACU2O8+DELTA SPECTRUM DENSITY |
| ISSN号 | 1745-2473 |
| 通讯作者 | Dai, PC: Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. |
| 中文摘要 | High-temperature (high-T(c)) superconductivity in the copper oxides arises from electron or hole doping of their antiferromagnetic (AF) insulating parent compounds. The evolution of the AF phase with doping and its spatial coexistence with superconductivity are governed by the nature of charge and spin correlations, which provides clues to the mechanism of high-T(c) superconductivity. Here we use neutron scattering and scanning tunnelling spectroscopy (STS) to study the evolution of the bosonic excitations in electron-doped superconductor Pr(0.88)LaCe(0.12)CuO(4-delta) with different transition temperatures (T(c)) obtained through the oxygen annealing process. We find that spin excitations detected by neutron scattering have two distinct modes that evolve with T(c) in a remarkably similar fashion to the low-energy electron tunnelling modes detected by STS. These results demonstrate that antiferromagnetism and superconductivity compete locally and coexist spatially on nanometre length scales, and the dominant electron-boson coupling at low energies originates from the electron-spin excitations. |
| 收录类别 | SCI |
| 资助信息 | US NSF [NSF-OISE-0968226]; US DOE, Division of Scientific User Facilities; DOE [DE-SC0002554]; US DOE BES [DE-FG02-05ER46202]; Chinese Academy of Sciences; Ministry of Science and Technology of China [2010CB833102, 2010CB923002]; Miller Institute of Basic Research in Science at Berkeley; [NSF-CAREER-0645299] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37254]  |
| 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 | Zhao, J,Niestemski, FC,Kunwar, S,et al. Electron-spin excitation coupling in an electron-doped copper oxide superconductor[J]. NATURE PHYSICS,2011,7(9):719. |
| APA | Zhao, J.,Niestemski, FC.,Kunwar, S.,Li, SL.,Steffens, P.,...&Madhavan, V.(2011).Electron-spin excitation coupling in an electron-doped copper oxide superconductor.NATURE PHYSICS,7(9),719. |
| MLA | Zhao, J,et al."Electron-spin excitation coupling in an electron-doped copper oxide superconductor".NATURE PHYSICS 7.9(2011):719. |
入库方式： OAI收割
来源：物理研究所
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