arXiv Open Access 2021

Collective formation of misfit dislocations at the critical thickness for equilibrium nanowire heterostructures

Thue Christian Thann Tobias Særkjær Sergej Schuwalow Peter Krogstrup

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Abstrak

In this work we model the evolution of strain energy during different growth stages of heterostructure nanowires. We find that the minimum energy configuration changes abruptly from fully elastically strained to partially relaxed due to collective formation of a misfit dislocation network. The transition at the critical thickness is associated with a characteristic density of misfits. These insights are gained from a technique developed to simulate misfit dislocations in a finite element framework, incorporating both elastic and plastic relaxation in a stationary heterostructure. We argue that these results have general relevance for mismatched heterostructures.

Topik & Kata Kunci

cond-mat.mtrl-sci

Penulis (4)

Thue Christian Thann

Tobias Særkjær

Sergej Schuwalow

Peter Krogstrup

Format Sitasi

APA MLA BibTeX

Thann, T.C., Særkjær, T., Schuwalow, S., Krogstrup, P. (2021). Collective formation of misfit dislocations at the critical thickness for equilibrium nanowire heterostructures. https://arxiv.org/abs/2102.03587

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Informasi Jurnal

Tahun Terbit: 2021
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓