On the determination of step energies. Theoretical considerations and application to an anisotropic Kossel model
2006 ◽
Vol 39
(4)
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pp. 563-570
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Keyword(s):
Steps on surfaces are important in crystal growth theory, as the step free energy determines the two-dimensional nucleation rate, island growth, step flow and spiral growth. In this paper, it is illustrated that in general in lattice models the step energy of a single step cannot be determined directly by counting broken bonds. A new method is proposed that uses the geometry of a step together with the bonding topology, allowing for a straightforward determination of single-step energies for any case. The method is applied to an anisotropic Kossel model.
Keyword(s):
2013 ◽
Vol 41
(12)
◽
pp. 1910
2013 ◽
Vol 41
(9)
◽
pp. 1418
2002 ◽
Vol 43
(2)
◽
pp. 335-343
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Keyword(s):