Unique Rock-n-Roll Dynamic Appearance of a Ge-Si Ad-Dimer on Si(001)
Journal Article
·
· Science
OSTI ID:759997
- Sandia National Laboratories
The authors carry out a comparative study of the energetic and dynamics of Si-Si, Ge-Ge, and Ge-Si ad-dimers on top of a dimer row in the Si(001) surface, using first-principles calculations. The dynamic appearance of a Ge-Si dimer is distinctively different from that of a Si-Si or Ge-Ge dimer, providing a unique way for its identification by scanning tunneling microscopy (STM). Its rocking motion, observed in STM, actually reflects a 180{degree} rotation of the dimer, involving a piecewise-rotation mechanism. The calculated energy barrier of 0.74 eV is in good agreement with the experimental value of 0.82 eV.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 759997
- Report Number(s):
- SAND2000-1911J
- Journal Information:
- Science, Journal Name: Science
- Country of Publication:
- United States
- Language:
- English
Similar Records
Unique Dynamic Appearance of a Ge-Si Ad-dimer on Si(001)
Correlated piecewise diffusion of a Ge ad-dimer on the Si(001) surface
Energetics and bias-dependent scanning tunneling microscopy images of Si ad-dimers on Ge(001)
Journal Article
·
Sun Dec 24 23:00:00 EST 2000
· Physical Review Letters
·
OSTI ID:40205940
Correlated piecewise diffusion of a Ge ad-dimer on the Si(001) surface
Journal Article
·
Fri Sep 15 00:00:00 EDT 2000
· Physical Review. B, Condensed Matter and Materials Physics
·
OSTI ID:20217703
Energetics and bias-dependent scanning tunneling microscopy images of Si ad-dimers on Ge(001)
Journal Article
·
Sun Aug 01 00:00:00 EDT 1999
· Physical Review, B: Condensed Matter
·
OSTI ID:362689