Experimental evidence of paired hole states in model high-$T_c$ compounds

A. Rusydi, P. Abbamonte, M. Berciu +6

The distribution of holes in Sr${}_{14-x}$Ca${}_x$Cu${}_{24}$O${}_{41}$ (SCCO) is revisited with semi-emperical reanalysis of the x-ray absorption (XAS) data and exact-diagonalized cluster…