Source:http://linkedlifedata.com/resource/pubmed/id/11136057
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
26 Pt 1
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| pubmed:dateCreated |
2001-1-26
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| pubmed:abstractText |
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 degrees 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.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Dec
|
| pubmed:issn |
0031-9007
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| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
25
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| pubmed:volume |
85
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
5603-6
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| pubmed:dateRevised |
2003-10-31
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| pubmed:year |
2000
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| pubmed:articleTitle |
Unique dynamic appearance of a Ge-Si ad-dimer on Si(001).
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| pubmed:affiliation |
Ames Laboratory-U.S. DOE, Iowa State University, Ames, Iowa 50011, USA.
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| pubmed:publicationType |
Journal Article
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