Spin and lattice vibrations of CaMn.sub.7./sub.O.sub.12./sub. in the THz range

0486523 - FZÚ 2018 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Kadlec, Filip - Goian, Veronica - Kadlec, Christelle - Kempa, Martin - Rols, S. - Taylor, J. - Orlita, M. - Kamba, Stanislav
Spin and lattice vibrations of CaMn₇O₁₂ in the THz range.
Proceedings of the 39th International Conference on Infrared Millimeter and Terahertz Waves. New York: IEEE, 2014, s. 1-2, č. článku 6956339. ISBN 978-147993877-3. ISSN 2162-2027.
[39th International Conference on Infrared Millimeter and Terahertz Waves. Tucson (US), 14.09.2014-19.09.2014]
Institucionální podpora: RVO:68378271
Klíčová slova: infrared * range * THz
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)

We studied meV-range excitations in the CaMn7O12 multiferroic which exhibits a high ferroelectric polarization. In infrared, THz and neutron scattering spectra, we observed spin waves far above the Neel temperature. We denote these as paraelectromagnons and explain their presence by strong short-range magnetic correlations.
Trvalý link: http://hdl.handle.net/11104/0281308