Department of Physics, ‡State Key Lab of Silicon Materials and §Center of Electron Microscope, Zhejiang University , Hangzhou 310027, China.
J Am Chem Soc. 2014 Jan 29;136(4):1284-7. doi: 10.1021/ja412094n. Epub 2014 Jan 15.
Superconductivity in low-dimensional compounds has long attracted much interest. Here we report superconductivity in a low-dimensional ternary telluride Ta4Pd3Te16 in which the repeating layers contain edge-sharing octahedrally coordinated PdTe2 chains along the crystallographic b axis. Measurements of electrical resistivity, magnetic susceptibility and specific heat on the Ta4Pd3Te16 crystals, grown via a self-flux method, consistently demonstrate bulk superconductivity at 4.6 K. Further analyses of the data indicate significant electron-electron interaction, which allows electronic Cooper pairing in the present system.
低维化合物中的超导现象一直以来都备受关注。在此，我们报告了一种低维三元碲化物 Ta4Pd3Te16 的超导性，其重复层包含沿晶体学 b 轴的八面体配位 PdTe2 链。通过自熔法生长的 Ta4Pd3Te16 晶体的电阻率、磁化率和比热测量结果一致表明，该晶体在 4.6 K 时表现出体超导性。对数据的进一步分析表明，存在显著的电子-电子相互作用，这使得本体系中存在电子库珀配对。
