Quasiparticle resonant states as a probe of short-range electronic   structure and Andre\'ev coherence
  The recently observed properties of quasiparticle resonant states near impurities on the surface of superconducting BSCCO demonstrate that in-plane Andreev processes are either absent or phase-incoherent. Analysis of the spectral and spatial details of the electronic structure near a Zn impurity also suggest an effective magnetic component of the impurity potential. Further experiments are proposed to clarify whether the effective moments of nearby impurities are correlated. 
Michael E. Flatt\'e (Department of Physics and Astronomy, University   of Iowa)