Exchange interaction effects on the optical properties of LuMnO3

A. B. Souchkov, J. R. Simpson, M. Quijada, H. Ishibashi, N. Hur, J. S. Ahn, S. W. Cheong, A. J. Millis, H. D. Drew

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Abstract

A systematic study of the linear optical response of LuMnO3 which elucidates the origin of the ε0 anomalies and the effects of the Mn-Mn exchange energy on the electrodynamics of the system is presented. It is shown that the exchange interaction manifests itself in an antiferromagnetic resonance, spin-phonon coupling, and the temperature dependence of a 1.7 eV on-site Mn d-d optical transition. Thus, the results give a comprehensive view of the magnetic and electronic structure of this interesting ferroelectric and strongly frustrated antiferromagnetic material.

Original languageEnglish (US)
Article number027203
Pages (from-to)027203/1-027203/4
JournalPhysical review letters
Volume91
Issue number2
StatePublished - Jul 11 2003

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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