dc.contributor.author |
Giorgianni, Flavio |
dc.contributor.author |
Udina, Mattia |
dc.contributor.author |
Cea, Tommaso |
dc.contributor.author |
Paris, Eugenio |
dc.contributor.author |
Caputo, Marco |
dc.contributor.author |
Radovic, Milan |
dc.contributor.author |
Boie, Larissa |
dc.contributor.author |
Sakai, Joe |
dc.contributor.author |
Schneider, Christof W. |
dc.contributor.author |
Johnson, Steven Lee |
dc.date |
2022 |
dc.date.accessioned |
2022-12-13T07:44:45Z |
dc.date.available |
2022-12-13T07:44:45Z |
dc.date.issued |
2022-12-13 |
dc.identifier |
https://ddd.uab.cat/record/266369 |
dc.identifier |
urn:10.1038/s42005-022-00882-7 |
dc.identifier |
urn:oai:ddd.uab.cat:266369 |
dc.identifier |
urn:scopus_id:85129241059 |
dc.identifier |
urn:articleid:23993650v5p103 |
dc.identifier |
urn:icn2uab:6552208 |
dc.identifier.uri |
http://hdl.handle.net/2072/529007 |
dc.format |
application/pdf |
dc.language |
eng |
dc.publisher |
|
dc.relation |
European Commission 604391 |
dc.relation |
Communications Physics ; Vol. 5 (2022), art. 103 |
dc.rights |
open access |
dc.rights |
Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
dc.rights |
https://creativecommons.org/licenses/by/4.0/ |
dc.subject |
Coherent phonons |
dc.subject |
Coherent spectroscopies |
dc.subject |
Collective modes |
dc.subject |
Frequency mixing |
dc.subject |
Light fields |
dc.subject |
Nonlinear process |
dc.subject |
Phonon mode |
dc.subject |
Raman-active phonon |
dc.subject |
Tera Hertz |
dc.subject |
Ultra-fast |
dc.title |
Terahertz displacive excitation of a coherent Raman-active phonon in V2O3 |
dc.type |
Article |
dc.description.abstract |
Nonlinear processes involving frequency-mixing of light fields set the basis for ultrafast coherent spectroscopy of collective modes in solids. In certain semimetals and semiconductors, generation of coherent phonon modes can occur by a displacive force on the lattice at the difference-frequency mixing of a laser pulse excitation on the electronic system. Here, as a low-frequency counterpart of this process, we demonstrate that coherent phonon excitations can be induced by the sum-frequency components of an intense terahertz light field, coupled to intraband electronic transitions. This nonlinear process leads to charge-coupled coherent dynamics of Raman-active phonon modes in the strongly correlated metal VO. Our results show an alternative up-conversion pathway for the optical control of Raman-active modes in solids mediated by terahertz-driven electronic excitation. |