Local surface deformations induced by interfacial misfit dislocations in lattice-mismatched heteroepitaxy of EuTe on PbTe(111)

被引：10

作者：

Springholz, G ^{[1
]}

Bauer, G ^{[1
]}

Holy, V ^{[1
]}

机构：

[1] MASARYK UNIV, DEPT SOLID STATE PHYS, BRNO 61137, CZECH REPUBLIC

来源：

SURFACE SCIENCE | 1996年 / 365卷 / 02期

关键词：

epitaxy; europium telluride; growth; heterojunctions; lead telluride; low index single crystal surfaces; molecular beam epitaxy; scanning tunneling microscopy; semiconductor-semiconductor interfaces; single crystal interfaces; surface relaxation and reconstruction; surface stress; surface structure;

D O I：

10.1016/0039-6028(96)00704-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using UHV scanning tunneling microscopy, the local surface deformations produced by strain fields of misfit dislocations are studied for molecular beam epitaxy of 2.1% lattice-mismatched EuTe on PbTe(111). The observed surface deformations exhibit a characteristic dependence on the orientation of the Burgers vector, which is in excellent quantitative agreement with calculations based on elasticity theory, taking into account the relaxation of the local strain fields due to the existence of a free surface. Furthermore, it is demonstrated that this allows the study of misfit dislocation reactions by STM even for dislocations located far below the epitaxial surface.

引用

页码：453 / 460

页数：8

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