Multiband nodeless superconductivity near the charge-density-wave quantum critical point in ZrTe<sub>3−<italic>x</italic></sub>Se<sub><italic>x</italic></sub>

Multiband nodeless superconductivity near the charge-density-wave quantum critical point in ZrTe_3−xSe_x

Cui Shan¹, He Lan-Po¹, Hong Xiao-Chen¹, Zhu Xiang-De^{2, 4}, Petrovic Cedomir⁴, Li Shi-Yan^{1, 3, †,}

Low-temperature resistivity of (a) ZrTe_2.956Se_0.044 and (b) ZrTe_2.949Se_0.051 single crystals under various magnetic fields. (c) Temperature dependence of the upper critical field H_c2(T) defined by ρ = 0 in panels (a) and (b). The dashed lines are guide to eye, which point to H_c2(0) ≈ 1.40 T and 0.85 T for x = 0.044 and 0.051 samples, respectively.