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 in-plane thermal conductivity of (a) ZrTe_2.956Se_0.044 and (b) ZrTe_2.949Se_0.051 single crystals in zero and magnetic fields. The lines are fits of the data to κ/T = a + bT^α−1, with α fixed to 2. The dashed lines represent the normal-state Wiedemann–Franz law expectations L₀/ρ₀ for the x = 0.044 and 0.051 samples, respectively.