Superconductivity of heterofullerides AnBmHgxC60 (A=K,Rb,Cs; B=Be,Mg,B,Al,Ga,In; n=1, 2; m=1, 2; x<1)

被引：4
|
作者：
Kulbachinskii, V. A. [1 ]
Bulychev, B. M. [1 ]
Lunin, R. A. [1 ]
Kachan, I. P. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Moscow 119991, Russia
来源：
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011) | 2012年 / 391卷
关键词：
FULLERIDES;
D O I：
10.1088/1742-6596/391/1/012173
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The fullerides A(n)M(m)C(60) (A=K, Rb, Cs; M= Be, Mg; B, Al, Ga. In; n=1, 2; m=1, 2) have been synthesized by exchange reactions of alkali metal fullerides with metal chlorides (groups 2 and 13), by method using liquid alloys of metals with mercury (amalgams), and by thermal decomposition of aluminum hydride. The samples are studied by X-ray diffraction, nuclear magnetic resonance, electron paramagnetic resonance, Raman scattering, and differential scanning calorimetry. It was found that the fulleride K2GaC60 is superconductor with transition temperature T-c=22 K that exceeds T-c for K3C60 (19 K). Fullerides with In and B are not supercomductors. The fullerides with composition CsnHgxC60 (n=2;3) are not superconductors and crystallize in orthorhombic lattices.
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页数：4
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