Interplay of the Jahn-Teller effect and spin-orbit coupling: The case of trigonal vibrations
- 31 May 2022
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 105 (20), 205142
- https://doi.org/10.1103/physrevb.105.205142
Abstract
We study an interplay between the orbital degeneracy and the spin-orbit coupling (SOC) giving rise to spin-orbital entangled states in concentrated systems (cooperative Jahn-Teller [JT] effect). As a specific example, we analyze the interaction of electrons occupying triply degenerate single-ion levels with trigonal vibrations (the problem). A more general problem of the electron–lattice interaction involving both tetragonal and trigonal vibrations is also considered. It is shown that the result of such interaction crucially depends on the occupation of levels leading to either the suppression or the enhancement of the JT effect by the SOC.
Keywords
Funding Information
- Russian Science Foundation (20-62-46047)
- Deutsche Forschungsgemeinschaft (277146847-CRC 1238)
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