Math-Sci Seminar

Speaker: Dr. Sondan Durukanošlu Feyiz, Department of Physics, Istanbul Technical University, Istanbul

Title:  The role of lattice vibrations in adatom diffusion at metal stepped surfaces

Date: Thu 30 Nov, 2006
Time: 16:45
Place: Science Building, Room Z42

Speaker:
Title:
Date:
Time: 16:45
Place: Science Building, Room Z42

Abstract:

I present results of calculations of thermodynamic functions for
single atom diffusion at a stepped surface of Cu(100) within the
framework of transition state theory.  Thermodynamic functions which
contribute to the pre-factors and activation barriers are calculated
from local vibrational density of states extracted using a real
space Green's function method with the force constants derived from
interaction potentials based on the embedded atom method.   I
further discuss the sensitivity of the local vibrational density of
states to the local atomic environment and the vibrational
contribution to the pre-factors and activation energies.

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