Magnons in the Multiferroic Phase of Cupric Oxide

ISSN
0370-1972
Date Issued
2020
Author(s)
Maity, Avishek
Schwesig, Steffen
Ziegler, Fabian
Sobolev, Oleg
DOI
10.1002/pssb.201900704
Abstract
Polarized neutron scattering is used to characterize low‐energy magnetic excitations in the multiferroic and antiferromagnetic phases of cupric oxide (CuO). The experiments are performed with the novel type of polarization analysis available at the thermal three‐axes spectrometer PUMA@FRM, II allowing the simultaneous detection of spinflip and nonspinflip scattering. The energy gaps of several magnon modes are determined, and evidence for the existence of electromagnons near 3 and 13 meV is found.
Polarized neutron scattering is used to characterize low‐energy magnetic excitations in the multiferroic and antiferromagnetic phases of cupric oxide (CuO). The experiments are performed with the novel type of polarization analysis available at the thermal three‐axes spectrometer PUMA@FRM II, allowing the simultaneous detection of spinflip and nonspinflip scattering. image © 2020 WILEY‐VCH Verlag GmbH \u0026 Co. KGaA, Weinheim
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