Spin dynamics in linear magnetoelectric material Mn${}_3$Ta${}_2$O${}_8$

Abstract

We performed inelastic neutron scattering experiments on single crystal samples of a linear magnetoelectric material Mn${}_3$Ta${}_2$O${}_8$, which exhibits a collinear antiferromagnetic order, to reveal the spin dynamics. Numerous modes observed in the neutron spectra were reasonably reproduced by linear spin-wave theory on the basis of the spin Hamiltonian including eight Heisenberg interactions and an easy-plane type single-ion anisotropy. The presence of strong frustration was found in the identified spin Hamiltonian.

8 pages, 4 figures

References in corpus (12)

• Spin current and magneto-electric effect in non-collinear magnets
• Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
• Electric-field switching of two-dimensional van der Waals magnets
• Magnetic inversion symmetry breaking and ferroelectricity in TbMnO3
• Linear spin wave theory for single-Q incommensurate magnetic structures
• Ferroelectric polarization flop in a frustrated magnet MnWO${}_4$ induced by magnetic fields
• Ferroelectricity induced by spin-dependent metal-ligand hybridization in Ba${}_2$CoGe${}_2$O${}_7$
• Collinear-to-Spiral Spin Transformation without Changing Modulation Wavelength upon Ferroelectric Transition in Tb1-xDyxMnO3
• Magnetically-Driven Ferroelectric Atomic Displacements in perovskite like YMnO3
• Spontaneous decays of magneto-elastic excitations in noncollinear antiferromagnet (Y,Lu)MnO3
• Spin nematic interaction in multiferroic compound Ba${}_2$CoGe${}_2$O${}_7$
• Spin-wave dispersion and magnon chirality in multiferroic TbMnO3