Magnetic and magnetoelectric excitations in TbMnO$_3$

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dc.creatorPimenov, A.
dc.creatorShuvaev, A.
dc.creatorLoidl, A.
dc.creatorSchrettle, F.
dc.creatorMukhin, A. A.
dc.creatorTravkin, V. D.
dc.creatorIvanov, V. Yu.
dc.creatorBalbashov, A. M.
dc.date2009-02-25
dc.date.accessioned2026-07-07T12:52:17Z
dc.date.available2026-07-07T12:52:17Z
dc.descriptionMagnetic and magnetoelectric excitations in the multiferroic TbMnO_3 have been investigated at terahertz frequencies. Using different experimental geometries we can clearly separate the electro-active excitations (electromagnons) from the magneto-active modes, i.e. antiferromagnetic resonances (AFMR). Two AFMR resonances were found to coincide with electromagnons. This indicates that both excitations belong to the same mode and the electromagnons can be excited by magnetic ac-field as well. In external magnetic fields and at low temperatures distinct fine structure of the electromagnons appears. In spite of the 90^o rotation of the magnetic structure, the electromagnons are observable for electric ac-fields parallel to the a-axis only. Contrary to simple expectations, the response along the c-axis remains purely magnetic in nature.
dc.description5 Pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0902.4382
dc.identifierhttp://arxiv.org/abs/0902.4382
dc.identifierPhys. Rev. Lett. 102, 107203 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.107203
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223249
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleMagnetic and magnetoelectric excitations in TbMnO$_3$
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