About: Anomalous multi-order Raman scattering in LaMnO3 a signature of quantum lattice effects in a Jahn-Teller crystal

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About: Anomalous multi-order Raman scattering in LaMnO3 a signature of quantum lattice effects in a Jahn-Teller crystal Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The multi-order Raman scattering is studied up to fourth order for a detwinned LaMnO3 crystal. Based on a comprehensive data analysis of the polarization-dependent Raman spectra,we show that the anomalous features in the multi-order scattering could be the sidebands on the low-energy mode at about 25 cm-1. We suggest that this low-energy mode stems from the tunneling transition between the potential energy minima arising near the Jahn–Teller Mn3C ion due to the lattice anharmonicity and that the multi-order scattering is activated by this low-energy electronic motion. The sidebands are dominated by the oxygen contribution to the phonon density-of-states, however, there is an admixture of an additional component, which may arise from coupling between the low-energy electronic motion and the vibrational modes. The multi-order Raman scattering is studied up to fourth order for a detwinned LaMnO3 crystal. Based on a comprehensive data analysis of the polarization-dependent Raman spectra,we show that the anomalous features in the multi-order scattering could be the sidebands on the low-energy mode at about 25 cm-1. We suggest that this low-energy mode stems from the tunneling transition between the potential energy minima arising near the Jahn–Teller Mn3C ion due to the lattice anharmonicity and that the multi-order scattering is activated by this low-energy electronic motion. The sidebands are dominated by the oxygen contribution to the phonon density-of-states, however, there is an admixture of an additional component, which may arise from coupling between the low-energy electronic motion and the vibrational modes. (en)
Title	Anomalous multi-order Raman scattering in LaMnO3 a signature of quantum lattice effects in a Jahn-Teller crystal Anomalous multi-order Raman scattering in LaMnO3 a signature of quantum lattice effects in a Jahn-Teller crystal (en)
skos:prefLabel	Anomalous multi-order Raman scattering in LaMnO3 a signature of quantum lattice effects in a Jahn-Teller crystal Anomalous multi-order Raman scattering in LaMnO3 a signature of quantum lattice effects in a Jahn-Teller crystal (en)
skos:notation	RIV/68378271:_____/13:00425250!RIV14-AV0-68378271
http://linked.open...avai/predkladatel	Fyzikální ústav AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(TA01010517), Z(AV0Z10100522)
http://linked.open...iv/cisloPeriodika	15
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Nuzhnyy, Dmitry Trepakov, Vladimír Dejneka, Alexandr Kovaleva, Natalia
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	61314
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/13:00425250
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	quantum lattice effects; LaMnO3 (en)
http://linked.open.../riv/klicoveSlovo	LaMnO3 quantum lattice effects
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[D271340567D9]
http://linked.open...i/riv/nazevZdroje	Journal of Physics-Condensed Matter
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	11 (xsd:int)
http://linked.open...vavai/riv/projekt	Modern multilayer optical structures.
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	25
http://linked.open...iv/tvurceVysledku	Dejneka, Alexandr Nuzhnyy, Dmitry Trepakov, Vladimír Kovaleva, Natalia Kugel, K. I. Kusmartsev, F. V. Balbashov, A. M. Demikhov, E. I. Kusmartseva, O. E. Maksimov, A. A. Stoneham, A. M.
http://linked.open...ain/vavai/riv/wos	000316622400014
http://linked.open...n/vavai/riv/zamer	Wave and Corpuscular Light Propagation, Optical Materials and Technology
issn	0953-8984
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/0953-8984/25/15/155602

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