| Issue |
Europhys. Lett.
Volume 64, Number 6, December 2003
|
|
|---|---|---|
| Page(s) | 776 - 782 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-00625-3 | |
| Published online | 01 November 2003 | |
dynamic Jahn-Teller polarons in 
Fachbereich Physik, Universität Osnabrück - D-49069 Osnabrück, Germany
Corresponding author: schirmer@uos.de
Received:
16
June
2003
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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