Surfaces of the perovskite manganites La1-xCaxMnO3

被引：100

作者：

Choi, JW ^{[1
]}

Zhang, JD

Liou, SH

Dowben, PA

Plummer, EW

机构：

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

[2] Univ Nebraska, Ctr Mat Res & Anal, Behlen Lab Phys, Lincoln, NE 68588 USA

[3] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA

[4] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.59.13453

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Angle-resolved core-level photoemission has been utilized to study the surfaces of crystalline thin films of manganite La1-xCaxMnO3 (x = 0.1 and 0.35). It is found that both the surface termination and Ca surface concentration depend on the bulk Ca concentration. For La0.65Ca0.35MnO3, the terminal layer is predominately Mn-O, while for La0.9Ca0.1MnO3, the majority of the surface is La/Ca-O terminated. Both surfaces exhibit a large enhancement in the Ca concentration compared to the bulk with the La0.9Ca0.1MnO3 sample, having a larger surface Ca concentration than for the La0.65Ca0.35MnO3 material. [S0163-1829(99)04420-3].

引用

页码：13453 / 13459

页数：7

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