Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Periodically Changing Morphology of the Growth Interface in Si, Ge, and GaP Nanowires

Wen, C. -Y. ; Tersoff, J. ; Hillerich, Karla LU ; Reuter, M. C. ; Park, J. H. ; Kodambaka, S. ; Stach, E. A. and Ross, F. M. (2011) In Physical Review Letters 107(2).
Abstract
Nanowire growth in the standard < 111 > direction is assumed to occur at a planar catalyst-nanowire interface, but recent reports contradict this picture. Here we show that a nonplanar growth interface is, in fact, a general phenomenon. Both III-V and group IV nanowires show a distinct region at the trijunction with a different orientation whose size oscillates during growth, synchronized with step flow. We develop an explicit model for this structure that agrees well with experiment and shows that the oscillations provide a direct visualization of catalyst supersaturation. We discuss the implications for wire growth and structure.
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
107
issue
2
article number
025503
publisher
American Physical Society
external identifiers
  • wos:000292516600021
  • scopus:79961079164
ISSN
1079-7114
DOI
10.1103/PhysRevLett.107.025503
language
English
LU publication?
yes
id
837c7b32-572e-476f-915e-068d9171406b (old id 2092915)
date added to LUP
2016-04-01 09:49:57
date last changed
2023-11-09 05:05:22
@article{837c7b32-572e-476f-915e-068d9171406b,
  abstract     = {{Nanowire growth in the standard &lt; 111 &gt; direction is assumed to occur at a planar catalyst-nanowire interface, but recent reports contradict this picture. Here we show that a nonplanar growth interface is, in fact, a general phenomenon. Both III-V and group IV nanowires show a distinct region at the trijunction with a different orientation whose size oscillates during growth, synchronized with step flow. We develop an explicit model for this structure that agrees well with experiment and shows that the oscillations provide a direct visualization of catalyst supersaturation. We discuss the implications for wire growth and structure.}},
  author       = {{Wen, C. -Y. and Tersoff, J. and Hillerich, Karla and Reuter, M. C. and Park, J. H. and Kodambaka, S. and Stach, E. A. and Ross, F. M.}},
  issn         = {{1079-7114}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Periodically Changing Morphology of the Growth Interface in Si, Ge, and GaP Nanowires}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.107.025503}},
  doi          = {{10.1103/PhysRevLett.107.025503}},
  volume       = {{107}},
  year         = {{2011}},
}