Resonance as a measure of pairing correlations in the high-T-c superconductor YBa2Cu3O6.6
文献类型：期刊论文
| 作者 | Dai, PC ; Mook, HA ; Aeppli, G ; Hayden, SM ; Dogan, F |
| 刊名 | NATURE
 |
| 出版日期 | 2000 |
| 卷号 | 406期号:6799页码:965 |
| 关键词 | NEUTRON-SCATTERING SPIN FLUCTUATIONS MECHANISM MODEL ANTIFERROMAGNETISM SPECTRA STATE GAP |
| ISSN号 | 0028-0836 |
| 通讯作者 | Dai, PC (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. |
| 中文摘要 | One of the most striking properties of the high-transition-temperature (high-T-c) superconductors is that they are all derived from insulating antiferromagnetic parent compounds. The intimate relationship between magnetism and superconductivity in these copper oxide materials has intrigued researchers from the outset(1-4), because it does not exist in conventional superconductors. Evidence for this link comes from neutron-scattering experiments that show the unambiguous presence of short-range antiferromagnetic correlations (excitations) in the high-T-c superconductors. Even so, the role of such excitations in the pairing mechanism for superconductivity is still a subject of controversy(5). For YBa2Cu3O6+x, where x controls the hole-doping level, the most prominent feature in the magnetic excitation spectrum is a sharp resonance (refs 6-11). Here we show that for underdoped YBa2Cu3O6.6, where x and T-c are below their optimal values, modest magnetic fields suppress the resonance significantly, much more so for fields approximately perpendicular to the CuO2 planes than for parallel fields. Our results indicate that the resonance measures pairing and phase coherence, suggesting that magnetism plays an important role in high-T-c superconductivity. The persistence of a field effect above T-c favours mechanisms in which the superconducting electron pairs are pre-formed in the normal state of underdoped copper oxide superconductors(12-14), awaiting transition to the superconducting state. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2014-02-20 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57891]  |
| 专题 | 物理研究所_所内人员在其他单位发表论文题录信息_所内人员在其他单位发表论文题录信息_期刊论文 |
| 推荐引用方式 GB/T 7714 | Dai, PC,Mook, HA,Aeppli, G,et al. Resonance as a measure of pairing correlations in the high-T-c superconductor YBa2Cu3O6.6[J]. NATURE,2000,406(6799):965. |
| APA | Dai, PC,Mook, HA,Aeppli, G,Hayden, SM,&Dogan, F.(2000).Resonance as a measure of pairing correlations in the high-T-c superconductor YBa2Cu3O6.6.NATURE,406(6799),965. |
| MLA | Dai, PC,et al."Resonance as a measure of pairing correlations in the high-T-c superconductor YBa2Cu3O6.6".NATURE 406.6799(2000):965. |
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。