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

Durukanoglu S., Kara A., Rahman T.

SURFACE SCIENCE, cilt.587, ss.128-133, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 587
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.susc.2005.04.041
  • Dergi Adı: SURFACE SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.128-133
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

We 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 prefactors 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. We further discuss the sensitivity of the local vibrational density of states to the local atomic environment. (c) 2005 Elsevier B.V. All rights reserved.