Lattice polarization effects on electron-gas charge densities in ionic superlattices

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dc.creatorHamann, D. R.
dc.creatorMuller, D. A.
dc.creatorHwang, H. Y.
dc.date2006-02-02
dc.date2006-04-12
dc.date.accessioned2026-07-07T07:01:27Z
dc.date.available2026-07-07T07:01:27Z
dc.descriptionThe atomic-level control achievable in artificially-structured oxide superlattices provides a unique opportunity to explore interface phases of matter including high-density 2D electron gases. Electronic-structure calculations show that the charge distribution of the 2D gas is strongly modulated by electron-phonon interactions with significant ionic polarization. Anharmonic finite-temperature effects must be included to reproduce experiment. Density functional perturbation theory is used to parameterize a simple model introduced to represent these effects and predict temperature dependencies.
dc.description16 pages including figures Added references 5 and 24, structure picture to Fig. 4, and new paragraph at end of Sec. III
dc.identifierhttps://arxiv.org/abs/cond-mat/0602045
dc.identifierhttp://arxiv.org/abs/cond-mat/0602045
dc.identifierPhys. Rev. B 73, 195403 (2006)
dc.identifierdoi:10.1103/PhysRevB.73.195403
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/108274
dc.subjectMaterials Science
dc.titleLattice polarization effects on electron-gas charge densities in ionic superlattices
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