Direct observation of the high magnetic field effect on the Jahn-Teller state in TbVO4

TitleDirect observation of the high magnetic field effect on the Jahn-Teller state in TbVO4
Publication TypeJournal Article
Year of Publication2008
AuthorsDetlefs C, Duc F, Kazei ZA, Vanacken J, Frings P, Bras W, Lorenzo JE, Canfield PC, Rikken G
Journal TitlePhysical Review Letters
Volume100
Pages056405
Date PublishedFeb
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberISI:000253019600059
Keywordsflux, growth, phase-transitions, RARE-EARTH VANADATES, SYNCHROTRON-RADIATION
Abstract

We report the first direct observation of the influence of high magnetic fields on the Jahn-Teller (JT) transition in TbVO4. Contrary to spectroscopic and magnetic methods, x-ray diffraction directly measures the JT distortion; the splitting between the (311)/(131) and (202)/(022) pairs of Bragg reflections is proportional to the order parameter. Our experimental results are compared to mean-field calculations, taking into account all possible orientations of the grains relative to the applied field, and qualitative agreement is obtained.

DOI10.1103/PhysRevLett.100.056405
Alternate JournalPhys. Rev. Lett.