The stability and surface termination of hexagonal LuFeO3

被引：14

作者：

Cao, Shi ^{[1
]}

Paudel, Tula R. ^{[1
]}

Sinha, Kishan ^{[1
]}

Jiang, Xuanyuan ^{[1
]}

Wang, Wenbin ^{[2
]}

Tsymbal, Evgeny Y. ^{[1
]}

Xu, Xiaoshan ^{[1
]}

Dowben, Peter A. ^{[1
]}

机构：

[1] Univ Nebraska, Dept Phys & Astron, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

[2] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2015年 / 27卷 / 17期

基金：

美国国家科学基金会;

关键词：

lutetium ferrite; multiferroic/magnetoelectric films; density functional theory; x-ray photoemission; X-RAY PHOTOELECTRON; OXIDE-FILMS; ELECTRONIC-STRUCTURE; MULTIPLET STRUCTURE; AUGER-ELECTRON; XPS SPECTRA; SCATTERING; APPROXIMATION; PHOTOEMISSION; PEROVSKITE;

D O I：

10.1088/0953-8984/27/17/175004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The surface termination and the nominal valence states for hexagonal LuFeO3 thin films grown on Al2O3(0 0 0 1) substrates were characterized by angle resolved x-ray photoemission spectroscopy. The Lu 4f, Fe 2p and O 1s core level spectra indicate that both the surface termination and the nominal valence depend on surface preparation, but the stable surface terminates in a Fe-O layer. This is consistent with the results of density functional calculations which predict that the Fe-O termination of LuFeO3(0 0 0 1) surface is energetically favorable and stable over a broad range of temperatures and oxygen partial pressures when it is reconstructed to eliminate surface polarity.

引用

页数：7

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