X-ray diffraction measurement of the Jahn-Teller distortion in TmVO4

Armin Segmüller, R. L. Melcher, H. Kinder

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Single crystal X-ray diffraction has been used to determine the magnitude and temperature dependence of the tetragonal-to-orthorhombic distortion below the cooperative Jahn-Teller phase transition occuring in TmVO4 at 2.15 K. The results are in good agreement with mean field theory and with the results of a previous investigation of the soft acoustic mode above the transition. It can be concluded that the interaction of long wavelength acoustic phonons with the ground doublet of the Tm3+ ion is the dominant mechanism for the transition.

Original languageEnglish
Pages (from-to)101-104
Number of pages4
JournalSolid State Communications
Volume15
Issue number1
DOIs
StatePublished - 1 Jul 1974
Externally publishedYes

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