Mechanism for the orientational phase transition of K3C60
Li, HN; Xu, YB; Bao, SN; Li, HY; Wu, TQ; Chen, X; Qian, HJ; Kurash, I; Liu, FQ; Qian HJ(钱海杰); Kui RX(奎热西); Liu FQ(刘凤琴)
刊名ACTA PHYSICA SINICA
2001
卷号50期号:12页码:2456-2460
关键词K3C60 orientational phase transition mechanism
学科分类Physics
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
文章类型Article
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.
类目[WOS]Physics, Multidisciplinary
研究领域[WOS]Physics
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语种英语
WOS记录号WOS:000172679200032
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239756
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
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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.
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