Remarkable site selectivity properties of the ARPES matrix element in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_8$

S. Sahrakorpi, M. Lindroos, A. Bansil

We show that the ARPES spectra for emission from the bonding as well as the antibonding Fermi surface sheet in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_8$ (Bi2212) possess remarkable site selectivit…