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Superconductivity and the upper critical field in the chiral noncentrosymmetric superconductor NbRh<sub>2</sub>B<sub>2</sub>
NbRh2B2 crystallises in a chiral noncentrosymmetric structure and exhibits bulk type-II superconductivity below K. Here we show that the temperature dependence of the upper critical field deviates from the behaviour expected for both Werthamer–Helfand–Hohenberg and the Ginzburg–Landau models and that T exceeds the Pauli paramagnetic limit, T. We explore the …