We report superconductivity in a new ternary molybdenum pnictide Rb 2 Mo 3 As 3 , synthesized via the solid state reaction method. Powder x-ray diffraction analysis reveals a hexagonal crystal structure with space group ##IMG## [http://ej.iop.org/images/0256-307X/37/9/097401/cpl_37_9_097401_ieqn1.gif] {$P\bar{6}m2$} (No. 187), and the refined lattice parameters are a = 10.431(5) Å, c = 4.460(4) Å. SEM images show rod-like grains with good ductility, confirming a quasi-one-dimensional (Q1D) structure. Electrical resistivity and dc magnetic susceptibility characterizations exhibit superconductivity with an onset of T c = 10.5 K. The upper critical field of Rb 2 Mo 3 As 3 is estimated to be 28.2T at zero temperature, providing an evidence of possible unconventional superconductivity. Our recent discovery of MoAs-based superconductors above 10 K provides a unique platform for...

中文翻译：

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一种新的准一维三元钼化物Rb 2 Mo 3 As 3，其在10.5K处具有超导转变

我们报告了通过固态反应方法合成的新型三元钼酸锂Rb 2 Mo 3 As 3中的超导性。粉末X射线衍射分析显示具有空间群## IMG ##的六边形晶体结构[http://ej.iop.org/images/0256-307X/37/9/097401/cpl_37_9_097401_ieqn1.gif] {$ P \ bar {6} m2 $}（第187号），精炼的晶格参数为a = 10.431（5）Å，c = 4.460（4）Å。SEM图像显示出具有良好延展性的棒状晶粒，证实了准一维（Q1D）结构。电阻率和直流磁化率表征显示出超导性，开始时T c = 10.5K。Rb2 Mo 3 As 3的上限临界温度在零温度下估计为28.2T，这提供了可能的非常规超导性的证据。