000810796 001__ 810796 000810796 005__ 20250129094242.0 000810796 0247_ $$2doi$$a10.1103/PhysRevB.93.214428 000810796 0247_ $$2ISSN$$a0163-1829 000810796 0247_ $$2ISSN$$a0556-2805 000810796 0247_ $$2ISSN$$a1095-3795 000810796 0247_ $$2ISSN$$a1098-0121 000810796 0247_ $$2ISSN$$a1550-235X 000810796 0247_ $$2ISSN$$a2469-9969 000810796 0247_ $$2Handle$$a2128/11639 000810796 0247_ $$2WOS$$aWOS:000378104100004 000810796 037__ $$aFZJ-2016-03385 000810796 082__ $$a530 000810796 1001_ $$0P:(DE-Juel1)131047$$aXiao, Y.$$b0$$eCorresponding author 000810796 245__ $$aSpin-wave and electromagnon dispersions in multiferroic MnWO 4 as observed by neutron spectroscopy: Isotropic Heisenberg exchange versus anisotropic Dzyaloshinskii-Moriya interaction 000810796 260__ $$aCollege Park, Md.$$bAPS$$c2016 000810796 3367_ $$2DRIVER$$aarticle 000810796 3367_ $$2DataCite$$aOutput Types/Journal article 000810796 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1487492791_2911 000810796 3367_ $$2BibTeX$$aARTICLE 000810796 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000810796 3367_ $$00$$2EndNote$$aJournal Article 000810796 520__ $$aHigh-resolution inelastic neutron scattering reveals that the elementary magnetic excitations in multiferroic MnWO4 consist of low-energy dispersive electromagnons in addition to the well-known spin-wave excitations. The latter can well be modeled by a Heisenberg Hamiltonian with magnetic exchange coupling extending to the 12th nearest neighbor. They exhibit a spin-wave gap of 0.61(1) meV. Two electromagnon branches appear at lower energies of 0.07(1) and 0.45(1) meV at the zone center. They reflect the dynamic magnetoelectric coupling and persist in both the collinear magnetic and paraelectric AF1 phase and the spin spiral ferroelectric AF2 phase. 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