Superconductivity of the Heterofullerides Synthesized from Gallams and Amalgams

27th International Conference on Low Temperature Physics

Kulbachinskii, V.A.^1 ; Lunin, R.A.^1 ; Bulychev, B.M.^1

Moscow State University, Low Temperature Physics Department, Moscow, Russia^1

关键词: Alkaline metal;    Fullerides;    gallam;    Heterofullerides;    Orthorhombic lattices;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/2/022026/pdf
DOI  :  10.1088/1742-6596/568/2/022026

来源: IOP

【 摘 要 】

The fullerides with composition A2BxDyC60(A=K,Rb,Cs; B,D=Ga, In, Sn, Bi, Be, Al, Mg, Hg; x,y2InxGayC60is a superconductor with transition temperature Tc24.5 K that exceed Tc=19 K for reference K3C60. The fulleride Rb2InxGayC60is a superconductor with Tc26 K. Superconductivity of heterofulleride with a composition K2HgxC60(x2HgxC60Tc=25 K, though Rb2C60, as well as K2C60, are not superconductors. Only one fulleride on The base of potassium (which does not include atoms of other alkaline metals Rb and Cs) was known before-the K2LuC60(Tc=20 K) with Tchigher than for K3C60[1]. The fullerides with composition Rb3InxGayC60and Cs3InxGayC60are not superconductors and crystallized in The orthorhombic lattice. Fullerides K2GaxBiyC60and K2GaxSnyC60(x,y