1.
Phys Rev Lett
; 89(28 Pt 1): 287002, 2002 Dec 31.
Artigo
em Inglês
| MEDLINE
| ID: mdl-12513174
RESUMO
Recent STM experiments on Bi2Sr2Ca2Cu3O10 observed sharp bound states associated with Zn and Ni impurities, as previously predicted theoretically. Here we extend the theory to the case of a finite concentration of impurities. Using the nonlocal coherent potential approximation, we show that the resonance peak both broadens and shifts as a function of impurity concentration.