Crossover between SC states in an unconventional superconductor UCoGe driven by ferromagnetic spin fluctuations

J. Poltierová Vejpravová, J. Pospíšil, V. Sechovský

UCoGe is reported as a weak ferromagnetic (FM) two-band superconductor (SC) with the critical temperature, $T_{\mathrm{SC}}\sim$ 0.7 K and the Curie temperature, $T_{\mathrm{C}}\si…