Fermi level density of states modulation without charge transfer in nickelate superlattices

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By using first-principles density functional theory calculations for (LaNiO3)(m)/(SrTiO3)(n) superlattices, we report a systematic electronic response to the interface geometry. It is found that the density of states at the Fermi level of metallic nickelate layers is significantly reduced without charge transfer in the vicinity of the interface to the insulating SrTiO3. This type of electronic state redistribution is clearly distinctive from other interface phenomena such as charge and orbital reconstruction. Our result sheds new light on the understanding of the nickelates and other transition-metal oxide heterostructures.
Publisher
IOP PUBLISHING LTD
Issue Date
2014-04
Language
English
Article Type
Article
Keywords

OXIDE INTERFACES; ELECTRON-GAS; SUPERCONDUCTIVITY; RECONSTRUCTION; COEXISTENCE

Citation

JOURNAL OF PHYSICS-CONDENSED MATTER, v.26, no.14

ISSN
0953-8984
DOI
10.1088/0953-8984/26/14/145501
URI
http://hdl.handle.net/10203/187259
Appears in Collection
PH-Journal Papers(저널논문)
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