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投稿时间：2012-04-23
投稿时间：2012-04-23
中文摘要: 研究了InGaAs/GaAs自组织量子点体系的应变分布.结果表明, 量子点形状的各向异性对其流体静压应变的影响较为微弱, 而对单轴应变的影响则更加明显且较为复杂.对于实验生长的常见S-K模式的量子点, 其弹性张量的立方对称度大于形状对称度, 因此应变分布中的各向异性主要由量子点形状的各向异性决定.量子点内部应变对于量子点各方向尺寸的相对变化较为敏感, 而量子点体积的变化对其应变分量几乎没有影响.
Abstract:The strain distribution of InGaAs/GaAs self-organized quantum dots(QDs)is investigated.The influence of the QDs'geometrical symmetry on hydrostatic strain is relatively weak, while on uniaxial strain is more obvious and complex.For the Common Stranski-Krastanov growth mode, the cubic symmetry of elastic tensor is larger than that of shape, so the anisotropic strain distribution in QDs is mainly affected by the geometry anisotropy.The internal strain is more sensitive to the changes in size in different directions, while for the volume changes of QDs, the strain component is almost unaffected.
文章编号：20130218 中图分类号： 文献标志码：
基金项目:国家自然科学基金(61204105);上海市自然科学基金资助(B10ZR1412400);上海市科技创新行动计划地方院校能力建设资助(10110502200)
| 作者 | 单位 | |
| 汤乃云 | naiyuntang@126.com |
| Author Name | Affiliation | |
| TANG Nai-yun | naiyuntang@126.com |
引用文本：
汤乃云.各向异性对InAs/GaAs量子点应变分布的影响[J].上海电力大学学报,2013,29(2):173-179.
TANG Nai-yun.Effect of Geometrical Symmetry on Strain Distribution of InGaAs/GaAs Self-Organized Quantum Dots[J].Journal of Shanghai University of Electric Power,2013,29(2):173-179.
汤乃云.各向异性对InAs/GaAs量子点应变分布的影响[J].上海电力大学学报,2013,29(2):173-179.
TANG Nai-yun.Effect of Geometrical Symmetry on Strain Distribution of InGaAs/GaAs Self-Organized Quantum Dots[J].Journal of Shanghai University of Electric Power,2013,29(2):173-179.