Breaking of the selection rules for optical transitions in the dielectric PrFe3(BO3)4 crystal by a praseodymium-iron exchange interaction

M. N. Popova, T. N. Stanislavchuk, B. Z. Malkin, L. N. Bezmaternykh

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

We report on the emergence of new lines in the optical spectrum of the PrFe3(BO3)4 single crystal at the magnetic ordering temperature. The transitions between singlet crystal-field sublevels of Pr3+ ion with the same transformational properties, strictly forbidden for the trigonal D3 point symmetry of this ion in PrFe3(BO3)4, appear below the Néel temperature and grow in intensity as a square of the order parameter. We show that the phenomenon originates from the mixing of wave functions of different Pr3+ sublevels by the Pr-Fe exchange interaction.

Original languageEnglish (US)
Article number187403
JournalPhysical Review Letters
Volume102
Issue number18
DOIs
StatePublished - May 8 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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