Eur. Phys. J. B 80, 351-354 (2011)
https://doi.org/10.1140/epjb/e2011-10691-3

High-frequency electromagnon in GdMnO₃

¹ Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria
² Experimentalphysik V, EKM, Universität Augsburg, 86135 Augsburg, Germany
³ General Physics Institute, Russian Academy of Sciences, 119991 Moscow, Russia

Corresponding author: ^a andrei.pimenov@ifp.tuwien.ac.at

Received: 9 September 2010
Revised: 23 February 2011
Published online: 14 March 2011

Abstract

Results of far-infrared transmittance are reported for GdMnO₃, a multiferroic perovskite manganite. The spectra allow to obtain position and intensity of the high-frequency electromagnon (~75 cm^-1) in this material. We present a comparative analysis of the high- and low-frequency electromagnons across the phase diagram of GdMnO₃. The traces of the electromagnon excitation can be detected even deeply in the paramagnetic state, which is attributed to magnetic fluctuations.