Title Many-body large polaron optical conductivity in $SrTi_{1-x}Nb_{x}O_{3}$ Author Devreese, J.T. Klimin, S.N. Mechelen, van, J.L.M. Marel, van der, D. Faculty/Department Faculty of Sciences. Physics Publication type article Publication 2010 Lancaster, Pa , 2010 Subject Physics Source (journal) Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015 Volume/pages 81(2010) :12 , p. 125119,1-125119,9 ISSN 1098-0121 ISI 000276248900056 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract Recent experimental data on the optical conductivity of niobium-doped SrTiO3 are interpreted in terms of a gas of large polarons with effective coupling constant αeff≈2. The theoretical approach takes into account many-body effects, the electron-phonon interaction with multiple LO-phonon branches, and the degeneracy and the anisotropy of the Ti t2g conduction band. Based on the Fröhlich interaction, the many-body large polaron theory provides an interpretation for the essential characteristics, exceptinterestinglyfor the unexpectedly large intensity of a peak at ∼130 meV, of the observed optical conductivity spectra of SrTi1−xNbxO3 without any adjustment of material parameters. Full text (open access) https://repository.uantwerpen.be/docman/irua/266b38/7b04642b.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000276248900056&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000276248900056&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000276248900056&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle