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VOLUME 60 (1994) | ISSUE 11 | PAGE 775
Hole centers in LaSrAl1-xCuxO4δ in connection with magnetic Jahn-Teller polarons in La2CuO4+δ
A study of Cu06 centers with a hole at planar oxygens in LaSrAlj .^Cu^C^ suggests that the occurrence of a hole at a Cu06 fragment in La2Cu04 gives rise to Coulomb and vibron deformations of the Cu06 center and the neighboring octahedra. A ferromagnetic cluster undergoing a random walk as a result of migration of a hole is a magnetic Jahn-Teller polaron. Conclusions are drawn regarding the electronic structure and dynamic characteristics of this cluster. © 1994 American Institute of Physics.