Probing the susceptibility ${\chi }^{\prime }(q)$ in cuprates using Ni impurities

Dirk K. Morr, Joerg Schmalian, Raivo Stern +1

Recent NMR experiments on $YB{a}_2(C{u}_{1-x}N{i}_x{)}_3{O}_{6+\delta }$ (Bobroff et al. Phys. Rev. Lett. 79, 2117 (1997)) have shown that Ni impurities provide an important probe for the momentum…