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A theoretical self-consistent method for the dislocation-based heterojunction

机译:基于错位的异质结的理论自我一致方法

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摘要

As an improvement of the conventional misfit dislocation theory, a theoretical self-consistent method is presented for a study of the heterojunction. Although the interaction between two adhesive crystals is still effectively described by the γ-energy function, however, the period appearing in the γ-energy function is no longer predetermined as is usually done but treated as a parameter needs to be determined in a self-consistent way. Because the period is actually the Burgers vector of the misfit dislocation, the self-consistent method is significant for the dislocation-based heterojunction theory. As an illustration, the theory is applied to the heterojunction of two-dimensional materials A1N and BN. It is found that for the A1N/BN heterojunction, the period determined from the minimum-energy principle is very close to the value given previously.
机译:随着传统错位位错理论的改进,提出了一种杂交结合的理论自我一致方法。 尽管通过γ-能量函数仍有有效地描述了两个粘合剂晶体之间的相互作用,但是,在γ-能量函数中出现的时段不再预定,如通常所做的,而是需要在自我中被确定为参数。 一贯的方式。 因为这段时间实际上是错配脱位的汉堡向量,因此自我一致的方法对于基于错位的异质结论来说意义重大。 作为图示,该理论应用于二维材料A1N和BN的异质结。 结果发现,对于A1N / BN异质结,从最小能量原理确定的时段非常接近先前给出的值。

著录项

  • 来源
    《Journal of Applied Physics》 |2021年第20期|205301.1-205301.10|共10页
  • 作者

    Shaofeng Wang;

  • 作者单位

    Department of Physics and Institute for Structure and Function Chongqing University 400030 Chongqing People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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