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

被引：3

作者：

Han, Myung Joon ^{[1
,2
,3
]}

van Veenendaal, Michel ^{[2
,3
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea

[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[3] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2014年 / 26卷 / 14期

关键词：

transition-metal oxide interface; electronic structure; density functional theory; OXIDE INTERFACES; ELECTRON-GAS; SUPERCONDUCTIVITY; RECONSTRUCTION; COEXISTENCE;

D O I：

10.1088/0953-8984/26/14/145501

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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.

引用

页数：6

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