Exciton control inaroom temperature bulk semiconductor withcoherent strain pulses
dc.contributor.author | Baldini, Edoardo | |
dc.contributor.author | Domínguez, Adriel | |
dc.contributor.author | Palmieri, Tania | |
dc.contributor.author | Cannelli, Oliviero | |
dc.contributor.author | Rubio Secades, Angel | |
dc.contributor.author | Ruello, Pascal | |
dc.contributor.author | Chergui, Majed | |
dc.date.accessioned | 2020-02-25T13:42:59Z | |
dc.date.available | 2020-02-25T13:42:59Z | |
dc.date.issued | 2019-11 | |
dc.identifier.citation | Science Advances 5(11) : (2019) // Article ID eaax2937 | es_ES |
dc.identifier.issn | 2375-2548 | |
dc.identifier.uri | http://hdl.handle.net/10810/41435 | |
dc.description.abstract | Controlling the excitonic optical properties of room temperature semiconductors using time-dependent perturbations is key to future optoelectronic applications. The optical Stark effect in bulk and low-dimensional materials has recently shown exciton shifts below 20 meV. Here, we demonstrate dynamical tuning of the exciton properties by photoinduced coherent acoustic phonons in the cheap and abundant wide-gap semiconductor anatase titanium dioxide (TiO2) in single crystalline form. The giant coupling between the excitons and the photoinduced strain pulses yields a room temperature exciton shift of 30 to 50 meV and a marked modulation of its oscillator strength. An advanced ab initio treatment of the exciton-phonon interaction fully accounts for these results, and shows that the deformation potential coupling underlies the generation and detection of the giant acoustic phonon modulations. | es_ES |
dc.description.sponsorship | We acknowledge support by the Swiss NSF via the NCCR:MUST and R'EQUIP and by the European Research Council Advanced Grant DYNAMOX. This project has received funding from the European Union's Horizon 2020 research and innovation program under Marie Sklodowska-Curie grant agreement no. 753874. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Association for the Advancement of Science | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/753874 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/3.0/es/ | * |
dc.subject | quantum-well structures | es_ES |
dc.subject | generation | es_ES |
dc.subject | dynamics | es_ES |
dc.subject | phonons | es_ES |
dc.title | Exciton control inaroom temperature bulk semiconductor withcoherent strain pulses | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | 2019 TheAuthors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S.Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). | es_ES |
dc.rights.holder | Atribución-NoComercial 3.0 España | * |
dc.relation.publisherversion | https://advances.sciencemag.org/content/5/11/eaax2937?__utma=109413082.538143510.1582637025.1582637025.1582637025.1&__utmb=109413082.3.10.1582637025&__utmc=109413082&__utmx=-&__utmz=109413082.1582637025.1.1.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=(not%20provided)&__utmv=-&__utmk=105183875 | es_ES |
dc.identifier.doi | 10.1126/sciadv.aax2937 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Física de materiales | es_ES |
dc.departamentoeu | Materialen fisika | es_ES |
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Except where otherwise noted, this item's license is described as 2019 TheAuthors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S.Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).