Formation of the density wave energy gap in Na2Ti2Sb2O: An optical spectroscopy study
文献类型：期刊论文
| 作者 | Huang, Y ; Wang, HP ; Wang, WD ; Shi, YG ; Wang, NL |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2013 |
| 卷号 | 87期号:10 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Huang, Y (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We performed an optical spectroscopy measurement on single crystals of Na2Ti2Sb2O, which is a parent compound for the newly discovered Ti-based superconductors. The study reveals a significant spectral change across the phase transition at 114 K and formation of a density wave type energy gap. The opening of the gap removes most of the free carrier spectral weight and causes a dramatic reduction in the carrier scattering rate. The ratio of 2 Delta/k(B)T(s) approximate to 14 is considerably larger than the mean-field value based on the weak-coupling BCS theory. The study also reveals a weak correlation effect in the titanium oxypnictides. DOI: 10.1103/PhysRevB.87.100507 |
| 资助信息 | National Science Foundation of China; Ministry of Science and Technology of China [2011CB921701, 2012CB821403] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57029]  |
| 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 | Huang, Y,Wang, HP,Wang, WD,et al. Formation of the density wave energy gap in Na2Ti2Sb2O: An optical spectroscopy study[J]. PHYSICAL REVIEW B,2013,87(10). |
| APA | Huang, Y,Wang, HP,Wang, WD,Shi, YG,&Wang, NL.(2013).Formation of the density wave energy gap in Na2Ti2Sb2O: An optical spectroscopy study.PHYSICAL REVIEW B,87(10). |
| MLA | Huang, Y,et al."Formation of the density wave energy gap in Na2Ti2Sb2O: An optical spectroscopy study".PHYSICAL REVIEW B 87.10(2013). |
入库方式： OAI收割
来源：物理研究所
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