Mechanism for the orientational phase transition of K3C60
文献类型：期刊论文
| 作者 | Li, HN; Xu, YB ; Bao, SN; Li, HY; Wu, TQ; Chen, X; Qian, HJ; Kurash, I; Liu, FQ; Qian HJ(钱海杰)
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| 刊名 | ACTA PHYSICA SINICA
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| 出版日期 | 2001 |
| 卷号 | 50期号:12页码:2456-2460 |
| 关键词 | K3C60 orientational phase transition mechanism |
| 通讯作者 | Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China ; Zhejiang Univ, Res Ctr Microsyst, Hangzhou 310027, Peoples R China ; Acad Sinica, Inst High Energy Phys, Natl Synchrotron Radiat Lab, Beijing 100039, Peoples R China |
| 英文摘要 | Conduction band structure of K3C60 single crystal films was studied at temperatures near 200 K. Band dispersions along the [111] direction could be observed at 190 K using synchrotron radiation photoemission spectra technique. When the sample temperature increased to 220 K, 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 occurring at 200 K. The fcc nearest-neighbor antiferromagetic Ising model was adopted to analyze the temperature dependence of the band structure. The phase transition is due to the one-dimensional-disordered structure (1DDS) at lower temperatures, which turns to a mixture of bi-directional structure domains and disordered molecules at higher temperatures. The number of disordered molecules was deduced to be about 40 percent of the total molecules at 220 K. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000172679200032 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/239756]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_实验物理中心 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 | Li, HN,Xu, YB,Bao, SN,et al. Mechanism for the orientational phase transition of K3C60[J]. ACTA PHYSICA SINICA,2001,50(12):2456-2460. |
| APA | Li, HN.,Xu, YB.,Bao, SN.,Li, HY.,Wu, TQ.,...&刘凤琴.(2001).Mechanism for the orientational phase transition of K3C60.ACTA PHYSICA SINICA,50(12),2456-2460. |
| MLA | Li, HN,et al."Mechanism for the orientational phase transition of K3C60".ACTA PHYSICA SINICA 50.12(2001):2456-2460. |
入库方式： OAI收割
来源：高能物理研究所
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