Atomic and electronic structure of Bi/GaAs(001)-alpha 2(2x4)

2008-07-02
Usanmaz, D.
ÇAKMAK, MELEK
Ellialtıoğlu, Süleyman Şinasi
We report an ab initio pseudopotential calculation for the atomic and electronic structure of Bi/GaAs(001)-alpha 2(2 x 4). Three structural models with Bi coverages of Theta = 1/4 are considered, containing one Bi dimer or two Bi-As mixed dimers. According to our calculations for this coverage, the atomic model of the Bi/GaAs(001)-(2 x 4) reconstruction is similar to the alpha 2 structure of the clean GaAs(001)-(2 x 4) surface in which the top As dimer is replaced by a Bi dimer. This result is in agreement with the most recent scanning tunneling microscopy work.
JOURNAL OF PHYSICS-CONDENSED MATTER

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Citation Formats
D. Usanmaz, M. ÇAKMAK, and S. Ş. Ellialtıoğlu, “Atomic and electronic structure of Bi/GaAs(001)-alpha 2(2x4),” JOURNAL OF PHYSICS-CONDENSED MATTER, pp. 0–0, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57831.