Nanostructure of a vicinal surface of SrTiO3:: Order on two length scales

被引：11

作者：

Joumard, Isabelle ^{[1
]}

Torrelles, Xavier

Lee, Tien-Lin

Bikondoa, Oier

Rius, Jordi

Zegenhagen, Jorg

机构：

[1] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[2] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.74.205411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Grazing incidence x-ray diffraction, combined with low energy electron diffraction and scanning tunneling microscopy shows that annealed SrTiO3(103) surfaces exhibit regular nanostructures on two length scales with shorter (similar to 1.2 nm) ripples bunching to longer (similar to 7.4 nm) waves, corresponding to six SrTiO3(103) unit cells. The surface, wavy in the [100] direction, exhibits SrO and TiO2 terminated "steps." Lateral relaxations along the [010] direction of the unit cell lead to a weak (1x2) reconstruction. Electrostatic forces are thought to be responsible for the observed surface morphology.

引用

页数：6

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