Anomalous bismuth-stabilized (2x1) reconstructions on GaAs(100) and InP(100) surfaces.
Phys Rev Lett
; 100(8): 086101, 2008 Feb 29.
Article
in En
| MEDLINE
| ID: mdl-18352637
ABSTRACT
First-principles phase diagrams of bismuth-stabilized GaAs- and InP(100) surfaces demonstrate for the first time the presence of anomalous (2x1) reconstructions, which disobey the common electron counting principle. Combining these theoretical results with our scanning-tunneling-microscopy and photoemission measurements, we identify novel (2x1) surface structures, which are composed of symmetric Bi-Bi and asymmetric mixed Bi-As and Bi-P dimers, and find that they are stabilized by stress relief and pseudogap formation.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2008
Document type:
Article