NMR and NQR study of pressure-induced superconductivity and the origin of critical-temperature enhancement in the spin-ladder cuprate Sr${}_2$Ca${}_{12}$Cu${}_{24}$O${}_{41}$

N. Fujiwara, Y. Fujimaki, S. Uchida +3

Pressure-induced superconductivity was studied for a spin-ladder cuprate Sr${}_2$Ca${}_{12}$Cu${}_{24}$O${}_{41}$ using nuclear magnetic resonance (NMR) under pressures up to the optimal p…