Spontaneous trimerization in two-dimensional antiferromagnets
文献类型：期刊论文
| 作者 | Cai, Z ; Chen, S ; Wang, YP |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2009 |
| 卷号 | 21期号:45 |
| 关键词 | SHASTRY-SUTHERLAND MODEL KAGOME HEISENBERG ANTIFERROMAGNETS SPIN SYSTEM SRCU2(BO3)(2) DIMER GROUND-STATE VALENCE-BOND QUANTUM ANTIFERROMAGNETS MAGNETIZATION PLATEAUS BOUND-STATES EXCITATION CHAIN |
| ISSN号 | 0953-8984 |
| 通讯作者 | Cai, Z (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | We report micro-Raman and infrared measurements on high quality iron-based arsenic oxide, at low temperatures (down to 20 K). Micro-Raman spectra exhibit two asymmetric peaks related to four phonon modes of As, Fe at similar to 160 cm(-1), of Nd at similar to 169 cm(-1), of As at similar to 203 cm(-1) and of Fe at similar to 214 cm(-1). No phonon anomaly has been observed at the superconducting transition. Far infrared reflectance measurements were performed at low temperatures, down to 77 K. In the far IR spectra obtained at room temperature, there are two strong peaks at about similar to 105 cm(-1) (13 meV),and similar to 446 cm(-1) (55 meV) and one weaker structure around similar to 270 cm(-1) (33.4 meV). The assignment of the observed modes has been done. Additionally, a band at similar to 494 cm(-1) and for temperatures below 230 K a peak at similar to 200 cm(-1) were observed. The temperature dependence of these modes reveals an unconventional behavior of the IR modes not reported before. (C) 2009 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | NSFC; Knowledge Innovation Project of CAS; MOST; Chinese Academy of Sciences; Deutscher Akademischer Austausch Dienst (DAAD) |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52979]  |
| 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 | Cai, Z,Chen, S,Wang, YP. Spontaneous trimerization in two-dimensional antiferromagnets[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2009,21(45). |
| APA | Cai, Z,Chen, S,&Wang, YP.(2009).Spontaneous trimerization in two-dimensional antiferromagnets.JOURNAL OF PHYSICS-CONDENSED MATTER,21(45). |
| MLA | Cai, Z,et al."Spontaneous trimerization in two-dimensional antiferromagnets".JOURNAL OF PHYSICS-CONDENSED MATTER 21.45(2009). |
入库方式： OAI收割
来源：物理研究所
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