Enhanced superconductivity by reducing magnetism in strained La2-xSrxCuO4 films

I report measurement results of the temperature dependence of electrical resistivity for the compressively strained (0 0 1)-oriented films of La2-xSrxCuO4, which show values of the superconducting transition temperature (Tc) higher than those for bulk materials. A comparison of the results for the films to those for bulk suggests that the number density of localized Cu spins is reduced in the films. This reduction seems to be essential for the enhancement of Tc in the films, which lead me to suggest that the magnetism in cuprates, rather than being the origin of high-temperature superconductivity (HTS), is actually an impediment to it