Abstract
A theory for columnar microstructure is presented. Column orientation is predicted, and the tangent rule is shown to be an approximate special case of a more general relationship. Results also predict that columns occur only at low substrate temperature. All of these results agree with experimental data. In addition, a relationship is found between column width and mean square diffusion length. The theory substantiates the empirical suggestion that adatom mobility is an important parameter governing column development.
Original language | English (US) |
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Pages (from-to) | 1396-1399 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 56 |
Issue number | 13 |
DOIs | |
State | Published - Jan 1 1986 |
ASJC Scopus subject areas
- General Physics and Astronomy