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Document type:
Zeitschriftenaufsatz 
Author(s):
Weber, T.; Roessli, B.; Stock, C.; Keller, T.; Schmalzl, K.; Bourdarot, F.; Georgii, R.; Ewings, R. A.; Perry, R. S.; B̈oni, P. 
Title:
Transverse Acoustic Phonon Anomalies at Intermediate Wave Vectors in ${\mathrm{MgV}}_{2}{\mathrm{O}}_{4}$ 
Abstract:
Magnetic spinels (with chemical formula AX2O4, with X a 3d transition metal ion) that also have an orbital degeneracy are Jahn-Teller active and hence possess a coupling between spin and lattice degrees of freedom. At high temperatures, MgV2O4 is a cubic spinel based on V3+ ions with a spin S=1 and a triply degenerate orbital ground state. A structural transition occurs at TOO=63 K to an orbitally ordered phase with a tetragonal unit cell followed by an antiferromagnetic transition of TN=42 K on...    »
 
Journal title:
Physical Review B 
Year:
2017 
Journal volume:
96 
Month:
nov 
Journal issue:
18 
Pages contribution:
184301