Magnetic excitations in the low-temperature ferroelectric phase of multiferroic YMn2O5 using inelastic neutron scattering

Abstract

We studied magnetic excitations in a low-temperature ferroelectric phase of the multiferroic YMn2O5 using inelastic neutron scattering (INS). We identify low-energy magnon modes and establish a correspondence between the magnon peaks observed by INS and electromagnon peaks observed in optical absorption [1]. Furthermore, we explain the microscopic mechanism, which results in the lowest-energy electromagnon peak, by comparing the inelastic neutron spectral weight with the polarization in the commensurate ferroelectric phase.

4 pages, 4 figures

References in corpus (13)

• Spin current and magneto-electric effect in non-collinear magnets
• Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
• Dirac Strings and Magnetic Monopoles in Spin Ice Dy2Ti2O7
• Possible evidence for electromagnons in multiferroic manganites
• Ferroelectricity in the Magnetic E-Phase of Orthorhombic Perovskites
• Dynamical magneto-electric coupling in helical magnets
• Electromagnons in multiferroic YMn2O5 and TbMn2O5
• Origin of electromagnon excitations in \textit{R}MnO${}_3$
• Electromagnons in multiferroic RMn2O5 compounds and their microscopic origin
• Complex Spin Structures and Origin of the Magneto-Electric Coupling in YMn2O5
• Electric field switching of antiferromagnetic domains in YMn2O5: a probe of the multiferroic mechanism
• The incommensurate magnetic structure of YMn2O5: a stringent test of the multiferroic mechanism
• Order Parameters and Phase Diagram of Multiferroic RMn${}_2$O${}_5$

Cited by in corpus (6)

• Multiferroic materials and magnetoelectric physics: symmetry, entanglement, excitation, and topology
• Magneto- to electro-active transmutation of spin waves in ErMnO3
• Magnetic excitations and anomalous spin wave broadening in multiferroic FeV2O4
• Spectral origin of the colossal magnetodielectric effect in multiferroic DyMn2O5
• Reduced crystal symmetry as origin of the ferroelectric polarization within the incommensurate magnetic phase of TbMn2O5
• Observation of different spin behavior with temperature variation and Cr substitution in a multiferroic compound YMn${}_2$O${}_5$