Evolution of the 251 cm(-1) infrared phonon mode with temperature in Ba0.6K0.4Fe2As2
文献类型：期刊论文
| 作者 | Dai, YM ; Xu, B ; Shen, B ; Xiao, H ; Lobo, RPSM ; Qiu, XG |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2012 |
| 卷号 | 21期号:7 |
| ISSN号 | 1674-1056 |
| 通讯作者 | Qiu, XG: Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | The far-infrared optical reflectivity of an optimally doped Ba1-xKxFe2As2 (x = 0.4) single crystal is measured from room temperature down to 4 K. We study the temperature dependence of the in-plane infrared-active phonon at 251 cm(-1). This phonon exhibits a symmetric line shape in the optical conductivity, suggesting that the coupling between the phonon and the electronic background is weak. Upon cooling down, the frequency of this phonon continuously increases, following the conventional temperature dependence expected in the absence of a structural or magnetic transition. The intensity of this phonon is temperature independent within the measurement accuracy. These observations indicate that the structural and magnetic phase transition might be completely suppressed by chemical doping in the optimally doped Ba0.6K0.4Fe2As2 compound. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [11104335, 91121004]; National Basic Research Program of China [2011CBA00107, 2012CB821400, 2009CB929102]; ANR, France [BLAN07-1-183876 GAPSUPRA] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37649]  |
| 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 | Dai, YM,Xu, B,Shen, B,et al. Evolution of the 251 cm(-1) infrared phonon mode with temperature in Ba0.6K0.4Fe2As2[J]. CHINESE PHYSICS B,2012,21(7). |
| APA | Dai, YM,Xu, B,Shen, B,Xiao, H,Lobo, RPSM,&Qiu, XG.(2012).Evolution of the 251 cm(-1) infrared phonon mode with temperature in Ba0.6K0.4Fe2As2.CHINESE PHYSICS B,21(7). |
| MLA | Dai, YM,et al."Evolution of the 251 cm(-1) infrared phonon mode with temperature in Ba0.6K0.4Fe2As2".CHINESE PHYSICS B 21.7(2012). |
入库方式： OAI收割
来源：物理研究所
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