Abstract
We demonstrate that annealing of a vicinal Si(111) surface at about 800 °C with a direct current in the direction that ascends the kinks enhances the formation of atomically straight step edges over micrometer lengths, while annealing with a current in the opposite direction does not. Every straight step edge has the same atomic configuration U(2, 0), which is useful as a template for the formation of a variety of nanostructures. A phenomenological model based on electromigration of charged mobile atoms explains the observed current-polarity dependent behavior.
| Original language | English |
|---|---|
| Article number | 031903 |
| Journal | Applied Physics Letters |
| Volume | 87 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2005 Jul 18 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Atomically straight steps on vicinal Si(111) surfaces prepared by step-parallel current in the kink-up direction. / Yoshida, S.; Sekiguchi, T.; Itoh, Kohei M.
In: Applied Physics Letters, Vol. 87, No. 3, 031903, 18.07.2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Atomically straight steps on vicinal Si(111) surfaces prepared by step-parallel current in the kink-up direction
AU - Yoshida, S.
AU - Sekiguchi, T.
AU - Itoh, Kohei M
PY - 2005/7/18
Y1 - 2005/7/18
N2 - We demonstrate that annealing of a vicinal Si(111) surface at about 800 °C with a direct current in the direction that ascends the kinks enhances the formation of atomically straight step edges over micrometer lengths, while annealing with a current in the opposite direction does not. Every straight step edge has the same atomic configuration U(2, 0), which is useful as a template for the formation of a variety of nanostructures. A phenomenological model based on electromigration of charged mobile atoms explains the observed current-polarity dependent behavior.
AB - We demonstrate that annealing of a vicinal Si(111) surface at about 800 °C with a direct current in the direction that ascends the kinks enhances the formation of atomically straight step edges over micrometer lengths, while annealing with a current in the opposite direction does not. Every straight step edge has the same atomic configuration U(2, 0), which is useful as a template for the formation of a variety of nanostructures. A phenomenological model based on electromigration of charged mobile atoms explains the observed current-polarity dependent behavior.
UR - http://www.scopus.com/inward/record.url?scp=24144432833&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=24144432833&partnerID=8YFLogxK
U2 - 10.1063/1.1995946
DO - 10.1063/1.1995946
M3 - Article
VL - 87
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 3
M1 - 031903
ER -