Title: Orbital dimerization in NaTiSi2O6: An orbital analogue of the spin-Peierls phase transition
Authors: Konstantinovic, MJ ×
van den Brink, J
Popovic, ZV
Moshchalkov, Victor
Isobe, M
Ueda, Y #
Issue Date: 2004
Series Title: Journal of magnetism and magnetic materials vol:272 issue:Suppl. 1 pages:E657-E658
Conference: date:Katholieke Univ Leuven, Lab Vaste Stoffys & Magnetisme, B-3001 Louvain, Belgium; Leiden Univ, Inst Lorentz Theoret Phys, NL-2300 RA Leiden, Netherlands; Univ Valencia, Inst Mat Sci, Valencia 46071, Spain; Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
Abstract: The phonon dynamics in NaTiSi2O6 is studied using the Raman scattering technique. The observed phonon anomalies around T = 210 K combined with theoretical considerations show that the high-temperature dynamical Jahn - Teller phase of NaTiSi2O6 exhibits a spontaneous breaking of translational symmetry into an orbital dimerized state. We describe this phase instability as an orbital analogue of the spin-Peierls phase transition. (C) 2004 Elsevier B.V. All rights reserved.
ISSN: 0304-8853
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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