Volume 64, Number 6, December 2003
|Page(s)||776 - 782|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 November 2003|
dynamic Jahn-Teller polarons in
Fachbereich Physik, Universität Osnabrück - D-49069 Osnabrück, Germany
Corresponding author: email@example.com
Accepted: 15 October 2003
It is analyzed how dynamic Jahn-Teller coupling of an hole with the surrounding lattice in oxide perovskites affects the electron paramagnetic resonance of shallow defects. The predicted unusual resonance parameters are seen to be realized by experimentally identified defects in . These centers thus manifest the properties of dynamic Jahn-Teller hole polarons in oxide perovskites. By varying the strength of the Jahn-Teller coupling, a continuous transition to the static Jahn-Teller case is modelled. The latter situation describes the properties of polarons identified previously in other oxide perovskites.
PACS: 71.38.Ht – Self-trapped or small polarons / 71.70.Ej – Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect
© EDP Sciences, 2003
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