Magnetic order in YBa2Cu3O6+x superconductors
文献类型：期刊论文
| 作者 | Mook, HA ; Dai, PC ; Hayden, SM ; Hiess, A ; Lynn, JW ; Lee, SH ; Dogan, F |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2002 |
| 卷号 | 66期号:14 |
| 关键词 | NEUTRON-SCATTERING SPIN FLUCTUATIONS PSEUDOGAP ANTIFERROMAGNETISM RESONANCE DENSITY MOMENTS METALS PHASE WATER |
| ISSN号 | 1098-0121 |
| 通讯作者 | Mook, HA (reprint author), Oak Ridge Natl Lab, Div Solid State, POB 2008, Oak Ridge, TN 37831 USA. |
| 中文摘要 | Polarized and unpolarized neutron diffraction has been used to search for magnetic order in YBa2Cu3O6+x superconductors. Most of the measurements were made on a high quality crystal of YBa2Cu3O6.6. It is shown that this crystal has highly ordered ortho-II chain order, and a sharp superconducting transition. Inelastic scattering measurements display a very clean spin-gap and pseudogap with any intensity at 10 meV being 50 times smaller than the resonance intensity. The crystal shows a complicated magnetic order that appears to have three components. A magnetic phase is found at high temperatures that seems to stem from an impurity with a moment that is in the a-b plane, but disordered on the crystal lattice. A second ordering occurs near the pseudogap temperature that has a shorter correlation length than the high temperature phase and a moment direction that is at least partly along the c axis of the crystal. Its moment direction, temperature dependence, and Bragg intensities suggest that it may stem from orbital ordering of the d-density wave type. An additional intensity increase occurs below the superconducting transition. The magnetic intensity in these phases does not change noticeably in a 7 T magnetic field aligned approximately along the c axis. Searches for magnetic order in YBa2Cu3O7 show no signal while a small magnetic intensity is found in YBa2Cu3O6.45 that is consistent with the c axis directed magnetic order. The results are contrasted with other recent neutron measurements. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2014-02-20 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57881]  |
| 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 | Mook, HA,Dai, PC,Hayden, SM,et al. Magnetic order in YBa2Cu3O6+x superconductors[J]. PHYSICAL REVIEW B,2002,66(14). |
| APA | Mook, HA.,Dai, PC.,Hayden, SM.,Hiess, A.,Lynn, JW.,...&Dogan, F.(2002).Magnetic order in YBa2Cu3O6+x superconductors.PHYSICAL REVIEW B,66(14). |
| MLA | Mook, HA,et al."Magnetic order in YBa2Cu3O6+x superconductors".PHYSICAL REVIEW B 66.14(2002). |
入库方式： OAI收割
来源：物理研究所
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