Theory of co-operative Jahn-Teller distortions in DyVO4and TbVO4(Phase transitions)
- 28 June 1971
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 4 (9), L179-L183
- https://doi.org/10.1088/0022-3719/4/9/013
Abstract
Low temperature crystallographic phase transitions in DyVO4 and TbVO are attributed to a co-operative Jahn-Teller effect. A preliminary report of the theory is given, based on a harmonic oscillator Hamiltonian for the crystal and an electron lattice coupling which is small compared to typical phonon zero point energies. An Ising Hamiltonian is shown to describe the co-operative ordering.Keywords
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