Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101822
Title: Raman spectroscopy of the low-dimensional antiferromagnet SrRu2 O6 with large Néel temperature
Authors: Ponosov, Y. S.
Komleva, E. V.
Zamyatin, D. A.
Walton, R. I.
Streltsov, S. V.
Issue Date: 2019
Publisher: American Physical Society
Citation: Raman spectroscopy of the low-dimensional antiferromagnet SrRu2 O6 with large Néel temperature / Y. S. Ponosov, E. V. Komleva, D. A. Zamyatin, et al. — DOI 10.1103/PhysRevB.99.085103 // Physical Review B. — 2019. — Vol. 99. — Iss. 8. — 085103.
Abstract: We report results of the Raman measurements for SrRu2O6 having extraordinary high Néel temperature for a layered material. No additional phonon modes were detected at the temperature of magnetic transition thus excluding lowering of the symmetry in the magnetically ordered phase. An unusual increase in softening and damping of some phonons as the temperature approaches TN indicates the appearance of a continuum of interacting electronic excitations at T≥300K. We also observe an intensive Raman response at 2050 cm-1. Analysis of the polarization dependence and comparison with available theoretical data shows that this peak likely originates from the transitions between molecular orbitals previously proposed to explain the magnetic properties of SrRu2O6. It can be explained by two magnon excitations only if the magnon bandwidth is ∼140 meV. © 2019 American Physical Society.
Keywords: BINARY ALLOYS
MOLECULAR ORBITALS
ANTIFERROMAGNETS
ELECTRONIC EXCITATION
LAYERED MATERIAL
LOW DIMENSIONAL
MAGNETIC TRANSITIONS
MAGNON EXCITATIONS
POLARIZATION DEPENDENCE
RAMAN MEASUREMENTS
PHONONS
URI: http://hdl.handle.net/10995/101822
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85061444160
PURE ID: 9071695
319f320c-3a4d-444b-b6f0-e17c828d6ef1
ISSN: 24699950
DOI: 10.1103/PhysRevB.99.085103
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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