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- Kozina, M. (author)
Terahertz-driven phonon upconversion in SrTiO3
- Article/chapterEnglish2019
Publisher, publication year, extent ...
- 2019-01-21
- Springer Science and Business Media LLC,2019
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:su-168588
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-168588URI
- https://doi.org/10.1038/s41567-018-0408-1DOI
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- Language:English
- Summary in:English
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- Direct manipulation of the atomic lattice using intense long-wavelength laser pulses has become a viable approach to create new states of matter in complex materials. Conventionally, a high-frequency vibrational mode is driven resonantly by a mid-infrared laser pulse and the lattice structure is modified through indirect coupling of this infrared-active phonon to other, lower-frequency lattice modulations. Here, we drive the lowest-frequency optical phonon in the prototypical transition metal oxide SrTiO3 well into the anharmonic regime with an intense terahertz field. We show that it is possible to transfer energy to higher-frequency phonon modes through nonlinear coupling. Our observations are carried out by directly mapping the lattice response to the coherent drive field with femtosecond X-ray pulses, enabling direct visualization of the atomic displacements.
Subject headings and genre
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
Added entries (persons, corporate bodies, meetings, titles ...)
- Fechner, M. (author)
- Marsik, P. (author)
- van Driel, T. (author)
- Glownia, J. M. (author)
- Bernhard, C. (author)
- Radovic, M. (author)
- Zhu, D. (author)
- Bonetti, StefanoStockholms universitet,Fysikum(Swepub:su)sbone (author)
- Staub, U. (author)
- Hoffmann, M. C. (author)
- Stockholms universitetFysikum (creator_code:org_t)
Related titles
- In:Nature Physics: Springer Science and Business Media LLC15:4, s. 387-+1745-24731745-2481
Internet link
- https://arxiv.org/abs/1807.10788arXiv:1807.10788
- https://www.dora.lib4ri.ch/psi/islandora/object/psi%3A24776/datastream/PDF4/Kozina-2019-Terahertz-driven_phonon_upconversion_in_SrTiO3-%28accepted_version%29.pdf
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-168588
- https://doi.org/10.1038/s41567-018-0408-1
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- Radovic, M.
- Zhu, D.
- Bonetti, Stefano
- Staub, U.
- Hoffmann, M. C.
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