Publications Repository - Gdańsk University of Technology

The synthesis and characterization of a new compound Mg4Pd7As6, which is found to be a superconductor with Tc = 5.45 K is reported. Powder X-ray diffraction confirms the U4Re7Si6 structure (space group Im-3m, no. 229) with the lattice parameter a = 8.2572(1) Å. Magnetization, specific heat, and electrical resistivity measurements indicate that it is a moderate-coupling ( = 0.72) type-II superconductor. The electronic and phonon structures are calculated, highlighting the importance of antibonding Pd–As interactions in determining the properties of this material. The calculated electron–phonon coupling parameter = 0.76 agrees very well with the experimental finding, which confirms the conventional pairing mechanism in Mg4Pd7As6 .

Authors

• Hanna Świątek link open in new tab ,
• Sylwia Gutowska,
• dr inż. Michał Winiarski link open in new tab ,
• Bartłomiej Wiendlocha,
• prof. dr hab. inż. Tomasz Klimczuk link open in new tab