Open AccessPd3Te2: an s-wave superconductor with Pd atom coordinated by five Te atoms
Author(s) -
X Chen,
Jiangang Guo,
Caimei Gong,
Junze Deng,
Tianping Ying,
Erjian Cheng,
S Y Li,
X L Chen
Publication year - 2019
Publication title -
journal of physics communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.407
H-Index - 17
ISSN - 2399-6528
DOI - 10.1088/2399-6528/ab3fd7
Subject(s) - superconductivity , condensed matter physics , electrical resistivity and conductivity , atom (system on chip) , coupling constant , coupling (piping) , phase (matter) , physics , materials science , quantum mechanics , computer science , metallurgy , embedded system
We have identified a new superconductor Pd 3 Te 2 based on pure phase samples. Electrical resistivity, magnetic susceptibility and specific heat measurements confirm that Pd 3 Te 2 is a bulk superconductor at 2.2 K. The value of Ginzburg–Landau parameter is larger than 1/√2, suggesting type-II superconductivity. Meanwhile, the analysis of specific heat indicates that Pd 3 Te 2 is a fully-gapped superconductor with electron-phonon coupling constant λ e-p = 0.58, which features a BCS weakly coupling case. According to our theoretical calculations, the superconductivity is related to the states of hybridization of Pd d states and Te p states at the Fermi level. Our results reveal that superconductivity can occur in five coordinated palladium tellurides.