Optical Study of the Free Carrier Response of LaTiO3/SrTiO3 Superlattices

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dc.creatorSeo, S. S. A.
dc.creatorChoi, W. S.
dc.creatorLee, H. N.
dc.creatorYu, L.
dc.creatorKim, K. W.
dc.creatorBernhard, C.
dc.creatorNoh, T. W.
dc.date2007-03-15
dc.date2008-01-07
dc.date.accessioned2026-07-07T08:52:39Z
dc.date.available2026-07-07T08:52:39Z
dc.descriptionWe used infrared spectroscopic ellipsometry to investigate the electronic properties of LaTiO3/SrTiO3 superlattices (SLs). Our results indicated that, independent of the SL periodicity and individual layer-thickness, the SLs exhibited a Drude metallic response with sheet carrier density per interface ~3x10^14 cm^-2. This is probably due to the leakage of d-electrons at interfaces from the Mott insulator LaTiO3 to the band insulator SrTiO3. We observed a carrier relaxation time ~ 35 fs and mobility ~ 35 cm^2V^-1s^-1 at 10 K, and an unusual temperature dependence of carrier density that was attributed to the dielectric screening of quantum paraelectric SrTiO3.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0703415
dc.identifierhttp://arxiv.org/abs/cond-mat/0703415
dc.identifierPhys. Rev. Lett. 99, 266801 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.266801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145353
dc.subjectStrongly Correlated Electrons
dc.titleOptical Study of the Free Carrier Response of LaTiO3/SrTiO3 Superlattices
dc.typetext

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