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arXiv 1301.7441cond-mat.mes-hall
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III-V纳米线生长动力学理论研究进展

Advances in the theory of III-V Nanowire Growth Dynamics

Peter Krogstrup, Henrik I. Jørgensen, Erik Johnson, Morten Hannibal Madsen, Claus B. Sørensen, Anna Fontcuberta i Morral, Martin Aagesen, Jesper Nygård, Frank Glas

摘要:

纳米线(NW)晶体的气液固生长是一个复杂的动力学过程,涉及到许多不同热力学状态的原子之间的相互作用。在过去的几十年里,随着速度的增加,许多工作已经报道了生长机制的各个方面,无论是实验还是理论。在此,我们将提出一个基于热力学参数和过渡态动力学的生长动力学的一般连续形式。我们使用的形式主义与最近的研究的关键要素,提出了一个更全面的处理III_V NW的增长,这可以作为一个基础来建模和理解的动力学机制的基本控制参数,温度和压力/束流。用分子束外延法在Si衬底上生长GaAs纳米线作为模型系统。

英文摘要:

Nanowire (NW) crystal growth via the vapour_liquid_solid mechanism is a complex dynamic process involving interactions between many atoms of various thermodynamic states. With increasing speed over the last few decades many works have reported on various aspects of the growth mechanisms, both experimentally and theoretically. We will here propose a general continuum formalism for growth kinetics based on thermodynamic parameters and transition state kinetics. We use the formalism together with key elements of recent research to present a more overall treatment of III_V NW growth, which can serve as a basis to model and understand the dynamical mechanisms in terms of the basic control parameters, temperature and pressures/beam fluxes. Self-catalysed GaAs NW growth on Si substrates by molecular beam epitaxy is used as a model system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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