Equations of state of RbxC60 (x=3, 4, and 6) -: art. no. 174114

被引：14
|
作者：
Sabouri-Dodaran, AA
Marangolo, M
Bellin, C
Mauri, F
Fiquet, G
Loupias, G
Mezouar, M
Crichton, W
Hérold, C
Rachdi, F
Rabii, S
机构：
[1] Univ Paris 06, CNRS, Lab Mineral & Cristallog, IPGP, F-75252 Paris 05, France
[2] Univ Paris 07, CNRS, Lab Mineral & Cristallog, IPGP, F-75252 Paris, France
[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[4] Univ Nancy 1, Lab Chim Solide Mineral, F-54506 Vandoeuvre Les Nancy, France
[5] Univ Montpellier 2, CNRS, UMR 5581, Grp Dynam Phases Condensees, F-34095 Montpellier 5, France
[6] Univ Penn, Dept Elect Engn, Philadelphia, PA 19104 USA
来源：
PHYSICAL REVIEW B | 2004年 / 70卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.70.174114
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The equations of state (EOS) of RbxC60 (x=3, 4, and 6) were determined by high pressure x-ray diffraction measurements. We focus on Rb4C60 since a Mott insulator-metal transition can be induced at around 0.8 GPa. We observed an abrupt jump in the compressibility of Rb4C60 between 0.5 GPa and 0.8 GPa which is attributed to a structural phase transition preserving the tetragonal symmetry. By ab initio calculations we are able to reproduce the experimental equations of state of RbxC60 (x=3,4). These calculations permit us to study the pressure dependence of the internal coordinates.
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页码：1 / 9
页数：9
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