Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor
文献类型：期刊论文
| 作者 | Zhang, CL ; Wang, M ; Luo, HQ ; Wang, MY ; Liu, MS ; Zhao, J ; Abernathy, DL ; Maier, TA ; Marty, K ; Lumsden, MD ; Chi, SX ; Chang, S ; Rodriguez-Rivera, JA ; Lynn, JW ; Xiang, T ; Hu, JP ; Dai, P |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2011 |
| 卷号 | 1 |
| 关键词 | PAIRING SYMMETRY IRON PNICTIDES BA0.6K0.4FE2AS2 |
| ISSN号 | 2045-2322 |
| 通讯作者 | Dai, P (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. |
| 中文摘要 | We report inelastic neutron scattering experiments on single crystals of superconducting Ba0.67K0.33Fe2As2 (T-c = 538 K). In addition to confirming the resonance previously found in powder samples, we find that spin excitations in the normal state form longitudinally elongated ellipses along the Q(AFM) direction in momentum space, consistent with density functional theory predictions. On cooling below T-c, while the resonance preserves its momentum anisotropy as expected, spin excitations at energies below the resonance become essentially isotropic in the in-plane momentum space and dramatically increase their correlation length. These results suggest that the superconducting gap structures in Ba(0.67)Ka(0.33)Fe(2)As(2) are more complicated than those suggested from angle resolved photoemission experiments. |
| 收录类别 | SCI |
| 资助信息 | US Department of Energy, Division of Materials Science, Basic Energy Sciences [DOE DE-FG02-05ER46202]; US Department of Energy, Division of Scientific User Facilities, Basic Energy Sciences; National Science Foundation [DMR-0454672, DMR-0944772]; Chinese Academy of Sciences; Center for Nanophase Materials Sciences; ORNL by Basic Energy Sciences, U.S. DOE |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/49816]  |
| 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 | Zhang, CL,Wang, M,Luo, HQ,et al. Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor[J]. SCIENTIFIC REPORTS,2011,1. |
| APA | Zhang, CL.,Wang, M.,Luo, HQ.,Wang, MY.,Liu, MS.,...&Dai, P.(2011).Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor.SCIENTIFIC REPORTS,1. |
| MLA | Zhang, CL,et al."Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor".SCIENTIFIC REPORTS 1(2011). |
入库方式： OAI收割
来源：物理研究所
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