Magic angle and height quantization in nanofacets on SiC(0001) surfaces

Magic angle and height quantization in nanofacets on SiC(0001) surfaces
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SiC(0001) 表面纳米面的魔角和高度量化

DOI:
10.1063/1.4864295
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发表时间:
2014
影响因子:
4
通讯作者:
A. Oshiyama
A. Oshiyama
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
K. Sawada;J. Iwata;A. Oshiyama

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我们报告的密度泛函计算提供的SiC(0001)表面上的小面形成的微观机制。我们首先确定单,双,和quad-bilayer步骤的原子尺度结构,并发现单双层(SB)步骤具有最低的形成能。然后,我们发现SB台阶被聚束以形成具有相对于(0001)平面的特定角度(魔刻面角)和沿着(0001)方向的离散高度(高度量化)的纳米刻面。我们还澄清了实验观察到的纳米面的自组织的微观原因。
We report on the density-functional calculations that provide microscopic mechanism of the facet formation on the SiC (0001) surface. We first identify atom-scale structures of single-, double-, and quad-bilayer steps and find that the single-bilayer (SB) step has the lowest formation energy. We then find that the SB steps are bunched to form a nanofacet with a particular angle relative to the (0001) plane (magic facet angle) and with a discretized height along the (0001) direction (height quantization). We also clarify a microscopic reason for the self-organization of the nanofacet observed experimentally.
DOI: 10.1103/physrevlett.91.226107
发表时间: 2003-11-28
影响因子: 8.6
作者:
Nakagawa, H;Tanaka, S;Suemune, I
通讯作者: Suemune, I
DOI: 10.1103/physrevlett.99.016102
发表时间: 2007-07
影响因子: 8.6
作者:
M. Fujii;Satoru Tanaka
通讯作者: M. Fujii;Satoru Tanaka