Pd3Te2: an s-wave superconductor with Pd atom coordinated by five Te atoms | Zendy

Chen Xu | Zendy; Jiangang Guo | Zendy; Chunsheng Gong | Zendy; Jun Deng | Zendy; Tianping Ying | Zendy; Erjian Cheng | Zendy; Shiyan Li | Zendy; Xiaolong Chen | Zendy

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Pd₃Te₂: an s-wave superconductor with Pd atom coordinated by five Te atoms

Author(s) -

Chen Xu,

Jiangang Guo,

Chunsheng Gong,

Jun Deng,

Tianping Ying,

Erjian Cheng,

Shiyan Li,

Xiaolong 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.

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