Resonant impurity scattering in a strongly correlated electron model
Open Access
- 7 February 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 72 (6), 884-887
- https://doi.org/10.1103/PhysRevLett.72.884
Abstract
Scattering by a single impurity introduced in a strongly correlated electronic system is studied by exact diagonalization of small clusters. It is shown that an inert site which is spinless and unable to accommodate holes can give rise to strong resonant scattering. A calculation of the local density of states reveals that, for increasing antiferromagnetic exchange coupling, d,- s,- and p-wave symmetry bound states in which a mobile hole is trapped by the impurity potential induced by a local distortion of the antiferromagnetic background successively pull out from the continuum.Keywords
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