| Publication Type |
journal article |
| School or College |
College of Engineering |
| Department |
Materials Science & Engineering |
| Creator |
Liu, Feng |
| Other Author |
Lu, Zhong-Yi; Wang, Cai-Zhuang; Qin, X. R.; Swartzentruber, B. S.; Lagally, M. G.; Ho, Kai-Ming |
| Title |
Unique dynamic appearance of a Ge-Si Ad-dimer on Si(001) |
| Date |
2000-12 |
| Description |
We carry out a comparative study of the energetics 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± 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. |
| Type |
Text |
| Publisher |
American Physical Society |
| Journal Title |
Physical Review Letters |
| Volume |
85 |
| Issue |
26 |
| First Page |
5603 |
| Last Page |
5606 |
| DOI |
10.1103/PhysRevLett.85.5603 |
| citatation_issn |
0031-9007 |
| Subject |
Ge-Si Ad-dimer; Si(001); First-principles calculations; Energetics |
| Subject LCSH |
Epitaxy; Molecular dynamics; Dimers |
| Language |
eng |
| Bibliographic Citation |
Lu, Z. Y., Liu, F., Wang, C. Z., Qin, X. R., Swartzentruber, B. S., Lagally, M. G., & Ho, K. M. (2000). Unique dynamic appearance of a Ge-Si Ad-dimer on Si(001). Physical Review Letters, 85(26), 5603-6. |
| Rights Management |
© American Physical Society http://dx.doi.org/10.1103/PhysRevLett.85.5603 |
| Format Medium |
application/pdf |
| Format Extent |
282,093 bytes |
| Identifier |
ir-main,12191 |
| ARK |
ark:/87278/s6ns1c99 |
| Setname |
ir_uspace |
| ID |
704918 |
| Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6ns1c99 |
