Charge density wave transition in Na2Ti2Sb2O probed by Na-23 NMR
文献类型：期刊论文
| 作者 | Fan, GZ ; Zhang, X ; Shi, YG ; Luo, JL |
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2013 |
| 卷号 | 56期号:12页码:2399 |
| 关键词 | layered transition-metal oxides charge-density-waves NMR |
| ISSN号 | 1674-7348 |
| 通讯作者 | Luo, JL (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Herein we investigated the electronic properties of layered transition-metal oxides Na2Ti2Sb2O by Na-23 nuclear magnetic resonance (NMR) measurement. The resistivity, susceptibility and specific heat measurements show a phase transition at approximately 114 K (T-A). No splitting or broadening in the central line of Na-23 NMR spectra is observed below and above the transition temperature indicating no internal field being detected. The spin-lattice relaxation rate divided by T (1/T-1/T) shows a sharp drop at about 110 K which suggests a gap opening behavior. Below the phase transition temperature zone, 1/T1T shows Fermi liquid behavior but with much smaller value indicating the loss of large part of electronic density of states (DOS) because of the gap. No signature of the enhancement of spin fluctuations or magnetic order is found with the decreasing temperature. These results suggest a commensurate charge-density-wave (CDW) phase transition occurring. |
| 资助信息 | National Natural Science Foundation of China [11025422]; National Basic Research Program of China [2011CB921701] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/56811]  |
| 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 | Fan, GZ,Zhang, X,Shi, YG,et al. Charge density wave transition in Na2Ti2Sb2O probed by Na-23 NMR[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2013,56(12):2399. |
| APA | Fan, GZ,Zhang, X,Shi, YG,&Luo, JL.(2013).Charge density wave transition in Na2Ti2Sb2O probed by Na-23 NMR.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,56(12),2399. |
| MLA | Fan, GZ,et al."Charge density wave transition in Na2Ti2Sb2O probed by Na-23 NMR".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 56.12(2013):2399. |
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。