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research article
Order-disorder type of Peierls instability in BaVS3
January 14, 2021
Lattice dynamics of low-dimensional BaVS3 is reported across the metal-insulator Peierls transition occurring at T-P = 69 K using a combination of the thermal diffuse scattering of x rays, inelastic x-ray scattering, and density-functional theory calculations. The nondetection of a Kohn anomaly points to a unique situation of an order-disorder Peierls instability with a quasielastic critical scattering which has been fully characterized. These observations are discussed in the scope of a Peierls instability dominated by strong electron-phonon coupling and/or nonadiabatic effects.
Type
research article
Web of Science ID
WOS:000607490600002
Authors
Ilakovac, Vita
•
Girard, Adrien
•
Baledent, Victor
•
Foury-Leylekian, Pascale
•
Winkler, Bjoern
•
•
Bosak, Alexei
•
Pouget, Jean-Paul
•
Kupcic, Ivan
Publication date
2021-01-14
Publisher
Published in
Volume
103
Issue
1
Article Number
014306
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
March 26, 2021
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