1999
DOI: 10.1103/physrevb.59.9775
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Multilayer structural determination of theGaAs(1¯1¯1¯)2×2reconstruction by automated tensor LEED

Abstract: The multilayer atomic coordinates for the GaAs(1 1 1 )(2ϫ2) surface have been determined using automated tensor low-energy electron diffraction. The results confirm the As adatom trimer model found by total-energy calculations and scanning tunneling microscopy studies although details of the displacements are different. The low-energy electron diffraction analysis, being sensitive to multilayer spacings in the surface region, shows that substantial subsurface relaxations are present. ͓S0163-1829͑99͒15115-4͔

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Cited by 10 publications
(4 citation statements)
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“…11) is shifted upwards by z 1 = 0.56 # e, i.e., it is obviously rehybridized towards p 3 , indicating that its DB is filled with two electrons. Quite recently, the LEED intensity analysis was essentially confirmed by another group [58].…”
Section: Gaas(111)a(2 â 2)mentioning
confidence: 76%
“…11) is shifted upwards by z 1 = 0.56 # e, i.e., it is obviously rehybridized towards p 3 , indicating that its DB is filled with two electrons. Quite recently, the LEED intensity analysis was essentially confirmed by another group [58].…”
Section: Gaas(111)a(2 â 2)mentioning
confidence: 76%
“…For this reason, we did not test alternative models. Quite recently, the LEED intensity analysis was essentially confirmed by another group [58]. However, considering the delicate surface structure of the GaAs " 1 " 1 " 1B(2 Â 2) surface with the As trimers, the R-factors are quite satisfactory.…”
Section: Gaasmentioning
confidence: 91%
“…As for the structural and physical properties of the GaAs(111)B surface, experimental and theoretical studies [45][46][47][48][49][50][51][52][53][54][55] structures have revealed that the stable surface reconstruction depends on the chemical potential of As. The (2 Â 2) surface with As trimer is stable over a wide range of As chemical potential [47,50].…”
Section: Gaasmentioning
confidence: 99%