Superconducting and Topological
Properties in Centrosymmetric
PbTaS2 Single Crystals

Gao, J. J.; Si, J. G.; Luo, X.; Yan, J.; Jiang, Z. Z.; Wang, W.; Xu, C. Q.; Xu, X. F.; Tong, P.; Song, W. H.; Zhu, X. B.; Lu, W. J.; Sun, Y. P.

doi:10.1021/acs.jpcc.0c00527.s001

jp0c00527_si_001.pdf (759.71 kB)

Superconducting and Topological Properties in Centrosymmetric PbTaS₂ Single Crystals

journal contribution

posted on 2020-03-05, 19:04 authored by J. J. Gao, J. G. Si, X. Luo, J. Yan, Z. Z. Jiang, W. Wang, C. Q. Xu, X. F. Xu, P. Tong, W. H. Song, X. B. Zhu, W. J. Lu, Y. P. Sun

We report the superconductivity of PbTaS₂ single crystals with the centrosymmetric structure. The systematic measurements of magnetization, electric transport and specific heat indicate that PbTaS₂ is a weakly coupled type-II superconductor with transition temperature T_c ∼ 2.6 K. Furthermore, the band structure calculations predicted four nodal lines near the Fermi energy with “drumhead-like” surface states, suggesting centrosymmetric PbTaS₂ is a candidate of topological nodal line semimetals. These results demonstrate that PbTaS₂ may open up another avenue for further exploring the properties of superconductivity and topological nodal-line states.