Figure (IMAGE)
Caption
(a) STM images of the fresh cleaved surface of TaIrTe4. (b) Temperature dependence of dI/dV spectra from 0.4 K to 1.28 K. (c) ρ(T) curves at different perpendicular magnetic fields (B//c axis) from 0 T to 1.30 T. At 0 T, the sample resistivity begins to drop at 1.54 K (superconducting transition temperature Tc). (d) Temperature dependence of critical current Ic of two TaIrTe4 samples with two different thicknesses (30 μm, 6 μm). These samples were obtained by mechanical exfoliation from one sample. (e) Angular dependence of the upper critical field Bc2 at 0.5 K. (f) Normalized upper critical field h? as a function of normalized temperature T/Tc. The red dashed line indicates the expectation for a polar p-wave state. The black dashed line indicates the Werthamer-Helfand-Hohenberg theory for s-wave superconductor.
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