Synchrotron radiation angle-resolved photoemission study of the orientational phase transition for K3C60
文献类型：期刊论文
| 作者 | Xu, YB ; Li, HN; Bao, SN; Li, HY; Qian, HJ; Liu, FQ; Ibrahim, K; Jia, JF; Xue, QK; Qian HJ(钱海杰)
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| 刊名 | HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
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| 出版日期 | 2001 |
| 卷号 | 25期号:S页码:33-38 |
| 关键词 | K3C60 orientational phase transition SR-ARUPS |
| 其他题名 | K3C60取向相变的同步辐射光电子谱研究 |
| 通讯作者 | Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China ; CAS, Inst High Energy Phys, Beijing 100039, Peoples R China ; Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China |
| 英文摘要 | Synchrotron radiation photoemission spectra were measured along the [111] direction of K3C60 single crystal film at 190K, 200K and 300K. Conduction band dispersions can be observed at 190K, and the band structure was nearly the same as that at 150K corresponding to the one-dimensional-disordered orientational structure (IDDS) of K3C60. When the sample temperature increased to 220K, most subpeaks of the conduction band vanished and the dispersions could not be observed. This result coincides with the existence of an orientational phase transition occurred at 200K. The fcc nearest-neighbor antiferromagetic Ising model was found to be suitable to analyz the temperature dependence of the band structure. The phase transition is due to the one-dimensional-disordered orientational structure at lower temperatures turned to be the mixture of BDS domains and disordered molecules at higher temperatures. The number of disordered molecules was deduced to be about 40 percent of the total molecular number at 220K. At room temperature, the electronic structure was drastically different from that at low temperatures because of the dynamical disorder Of C-60 molecules. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000176377600007 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/236799]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_加速器中心 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Xu, YB,Li, HN,Bao, SN,et al. Synchrotron radiation angle-resolved photoemission study of the orientational phase transition for K3C60[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2001,25(S):33-38. |
| APA | Xu, YB.,Li, HN.,Bao, SN.,Li, HY.,Qian, HJ.,...&奎热西.(2001).Synchrotron radiation angle-resolved photoemission study of the orientational phase transition for K3C60.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,25(S),33-38. |
| MLA | Xu, YB,et al."Synchrotron radiation angle-resolved photoemission study of the orientational phase transition for K3C60".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 25.S(2001):33-38. |
入库方式： OAI收割
来源：高能物理研究所
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