Ultrafast loss of lattice coherence in the light-induced structural phase transition of V2 O3
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Altres documents de l'autoria: Johnson, Allan Stewart; Moreno Mencía, David; Amuah, Emmanuel Baffu; Menghini, Mariela; Locquet, Jean-Pierre; Giannetti, Claudio; Pastor, Ernest; Wall, Simon
Metadades
Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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INVESTIGACIONMetadades
Títol
Ultrafast loss of lattice coherence in the light-induced structural phase transition of V2 O3Autoria
Data de publicació
2022-12-12Editor
American Physical SocietyISSN
0031-9007; 1079-7114Cita bibliogràfica
Johnson, A. S., Moreno-Mencía, D., Amuah, E. B., Menghini, M., Locquet, J. P., Giannetti, C., Pastor, E. & Wall, S. E. (2022). Ultrafast Loss of Lattice Coherence in the Light-Induced Structural Phase Transition of V2 O3. Physical Review Letters, 129(25), 255701.Tipus de document
info:eu-repo/semantics/articleVersió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
In solids, the response of the lattice to photoexcitation is often described by the inertial evolution on an impulsively modified potential energy surface which leads to coherent motion. However, it remains unknown ... [+]
In solids, the response of the lattice to photoexcitation is often described by the inertial evolution on an impulsively modified potential energy surface which leads to coherent motion. However, it remains unknown if vibrational coherence is sustained through a phase transition, during which coupling between modes can be strong and may lead to rapid loss of coherence. Here we use coherent phonon spectroscopy to track lattice coherence in the structural phase transition of V2 O3. In both the low and high symmetry phases unique coherent phonon modes are generated at low fluence. However, coherence is lost when driving between the low and high symmetry phases. Our results suggest strongly damped noninertial dynamics dominate during the phase transition due to disorder and multimode coupling. [-]
Publicat a
Physical Review Letters, Vol. 129, Iss. 25 (2022)Entitat finançadora
European Research Council (ERC) | Agencia Estatal de Investigación. Ministerio de Ciencia e Innovación | Generalitat de Catalunya / FEDER
Codi del projecte o subvenció
Grant Agreement No. 758461 | PGC2018-097027-B-I00 | CEX2019-000910-S | QuantumCAT U16-011424
Títol del projecte o subvenció
European Union's Horizon 2020 Research and Innovation Programme
Drets d'accés
info:eu-repo/semantics/openAccess
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