BREAKDOWN OF CONTINUUM ELASTICITY THEORY IN THE LIMIT OF MONATOMIC FILMS

被引：86

作者：

BRANDT, O ^{[1
]}

PLOOG, K ^{[1
]}

BIERWOLF, R ^{[1
]}

HOHENSTEIN, M ^{[1
]}

机构：

[1] MAX PLANCK INST MET RES,W-7000 STUTTGART 80,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.68.1339

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that the predictions of continuum elasticity theory fail in the ultimate limit of monolayer films. We directly measure the lattice distortion of ultrathin InAs layers in GaAs by high-resolution electron microscopy. For InAs films or 3 monolayer thickness, the observed tetragonal distortion agrees with the prediction of elasticity theory. For single InAs monolayers, however, the measured strain is much higher than expected. The InAs unit cell in this case is strained such as to conserve the bulk bond length at the interface.

引用

页码：1339 / 1342

页数：4

共 18 条

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