Spin-phonon coupling in ZnCr2Se4

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dc.creatorRudolf, T.
dc.creatorKant, Ch.
dc.creatorMayr, F.
dc.creatorHemberger, J.
dc.creatorTsurkan, V.
dc.creatorLoidl, A.
dc.date2006-11-02
dc.date.accessioned2026-07-07T08:14:01Z
dc.date.available2026-07-07T08:14:01Z
dc.descriptionSpin-phonon coupling and magnetodielectric effects of ZnCr2Se4 were investigated by means of infrared (IR) spectroscopy as a function of temperature and magnetic field. ZnCr2Se4 is dominated by ferromagnetic exchange but undergoes antiferromagnetic order at T = 21 K. In the magnetically ordered phase the low-frequency IR active phonon splits, indicating strong dynamic anisotropy via magnetic exchange interactions. Antiferromagnetic order and concomitantly the phonon splitting is wiped out by external magnetic fields. Hence, ZnCr2Se4 is a prominent example of a spin-driven Jahn-Teller effect which can be fully suppressed in external magnetic fields.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0611041
dc.identifierhttp://arxiv.org/abs/cond-mat/0611041
dc.identifierPhys. Rev. B 75, 052410 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.052410
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/132976
dc.subjectStrongly Correlated Electrons
dc.titleSpin-phonon coupling in ZnCr2Se4
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