Publication Type |
Journal Article |
School or College |
College of Engineering |
Department |
Electrical & Computer Engineering |
Creator |
Stringfellow, Gerald B. |
Other Author |
Niu, Xiaobin; Lee, Young-Ju.; Liu, Feng |
Title |
Simulation of self-assembled compositional core-shell structures in In xGa 1-xN nanowires |
Date |
2012-01-01 |
Description |
We report the simulation of compositional core-shell structure formation in epitaxial InGaN nanowires (NWs) and its dependence on kinetic growth mode and epitaxial relation to substrate, based on atomistic-strain-model Monte Carlo simulations. On a lattice mismatched substrate, the layer-by-layer growth results in self-assembled core-shell structures with the core rich in the unstrained component (relative to the substrate), while the faceted growth mode leads to the strained core component, and both are distinctively different from the equilibrium composition profiles. Our simulation results explain the reason that all the existing core-shell alloy NWs grown by vapor-liquid-solid experiments have cores rich in the unstrained (or less strained) components is because they have been grown via the layer-by-layer mode and, more importantly, suggest a possible route towards controlling the NW core-shell composition by altering growth mode and/or selecting substrate. |
Type |
Text |
Publisher |
American Physical Society |
Volume |
85 |
Issue |
16 |
First Page |
165316-1 |
Last Page |
165316-5 |
DOI |
http://dx.doi.org/DOI: 10.1103/PhysRevB.85.165316. |
Dissertation Institution |
University of Utah |
Language |
eng |
Bibliographic Citation |
Niu, X., Stringfellow, G. B., Lee, Y.-J., & Liu, F. (2012). Simulation of self-assembled compositional core-shell structures in In xGa 1-xN nanowires. Physical Review B - Condensed Matter and Materials Physics, 85(16), 165316-1-165316-5. |
Rights Management |
(c) American Physical Society |
Format Medium |
application/pdf |
Format Extent |
443,780 bytes |
Identifier |
uspace,17357 |
ARK |
ark:/87278/s6z89x3w |
Setname |
ir_uspace |
ID |
707776 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6z89x3w |