Vibrational coherent control of localized d-d electronic excitation
| Autor: | Giorgia Sparapassi, Francesca Giusti, Andrea Cartella, Stefano Marcantoni, Tobia F. Nova, Francesco Valiera, Daniele Fausti, Fabio Benatti, A. Marciniak, Jeroen van den Brink, Filippo Glerean, Angel Rubio, Simone Latini |
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| Přispěvatelé: | Marciniak, Alexandre, Marcantoni, Stefano, Giusti, Francesca, Glerean, Filippo, Sparapassi, Giorgia, Nova, Tobia, Cartella, Andrea, Latini, Simone, Valiera, Francesco, Rubio, Angel, van den Brink, Jeroen, Benatti, Fabio, Fausti, Daniele |
| Rok vydání: | 2020 |
| Předmět: |
Phonon
d-d transitions General Physics and Astronomy Thermal fluctuations FOS: Physical sciences Electron transition metal oxide 01 natural sciences Molecular physics 010305 fluids & plasmas d-d transition Condensed Matter - Strongly Correlated Electrons transition metal oxides pump-probe vibrational coherence 0103 physical sciences 010306 general physics Spin (physics) Physics Condensed Matter - Materials Science Strongly Correlated Electrons (cond-mat.str-el) Materials Science (cond-mat.mtrl-sci) Condensed Matter - Other Condensed Matter Coherent control Atomic electron transition Condensed Matter::Strongly Correlated Electrons Excitation Physics - Optics Coherence (physics) Other Condensed Matter (cond-mat.other) Optics (physics.optics) |
| Zdroj: | Nature Physics |
| DOI: | 10.48550/arxiv.2003.13447 |
| Popis: | Addressing the role of quantum coherence in the interplay between the different matter constituents (electrons, phonons and spin) is a critical step towards understanding transition metal oxides and design complex materials with new functionalities. Here we use coherent vibrational control of onsite d-d electronic transitions in a model edge-sharing insulating transition metal oxide (CuGeO3) to single-out the effects of vibrational coherence in electron-phonon coupling. By comparing time domain experiments based on high and low frequency ultrashort pumps with a fully quantum description of phonon assisted absorption, we could distinguish the processes associated to incoherent thermal lattice fluctuations from those driven by the coherent motion of the atoms. In particular, while thermal fluctuation of the phonon bath uniformly increases the electronic absorption, the resonant excitation of phonon modes results also in light-induced transparency which is coherently controlled by the vibrational motion. Comment: Article: 12 pages, 3 figures Supplementary Information : 28 pages, 13 figures |
| Databáze: | OpenAIRE |
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