Crystalline Electric Field as a Probe for Long-Range Antiferromagnetic Order and Superconducting State of CeFeAsO(1-x)F(x)
文献类型：期刊论文
| 作者 | Chi, S ; Adroja, DT ; Guidi, T ; Bewley, R ; Li, S ; Zhao, J ; Lynn, JW ; Brown, CM ; Qiu, Y ; Chen, GF ; Lou, JL ; Wang, NL ; Dai, P |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2008 |
| 卷号 | 101期号:21 |
| 关键词 | EXCITATIONS SYSTEMS |
| ISSN号 | 0031-9007 |
| 通讯作者 | Chi, S: Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. |
| 中文摘要 | We use inelastic neutron scattering to study the crystalline electric field (CEF) excitations of Ce(3+) in CeFeAsO(1-x)F(x) (x=0, 0.16). For nonsuperconducting CeFeAsO, the Ce CEF levels have three magnetic doublets in the paramagnetic state, but these doublets split into six singlets when the Fe ions order antiferromagnetically. For superconducting CeFeAsO(0.84)F(0.16) (T(c)=41 K), where the static antiferromagnetic order is suppressed, the Ce CEF levels have three magnetic doublets at h omega=0, 18.7, 58.4 meV at all temperatures. Careful measurements of the intrinsic linewidth Gamma and the peak position of the 18.7 meV mode reveal a clear anomaly at T(c), consistent with a strong enhancement of local magnetic susceptibility chi('')(h omega) below T(c). These results suggest that CEF excitations in the rare-earth oxypnictides can be used as a probe of spin dynamics in the nearby FeAs planes. |
| 收录类别 | SCI |
| 资助信息 | US DOE BES [DE-FG02-05ER46202]; US DOE; DCS [DMR-0454672]; CAS; Ministry of Science and Technology of China |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35420]  |
| 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 | Chi, S,Adroja, DT,Guidi, T,et al. Crystalline Electric Field as a Probe for Long-Range Antiferromagnetic Order and Superconducting State of CeFeAsO(1-x)F(x)[J]. PHYSICAL REVIEW LETTERS,2008,101(21). |
| APA | Chi, S.,Adroja, DT.,Guidi, T.,Bewley, R.,Li, S.,...&Dai, P.(2008).Crystalline Electric Field as a Probe for Long-Range Antiferromagnetic Order and Superconducting State of CeFeAsO(1-x)F(x).PHYSICAL REVIEW LETTERS,101(21). |
| MLA | Chi, S,et al."Crystalline Electric Field as a Probe for Long-Range Antiferromagnetic Order and Superconducting State of CeFeAsO(1-x)F(x)".PHYSICAL REVIEW LETTERS 101.21(2008). |
入库方式： OAI收割
来源：物理研究所
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