Multilayer structural determination of the GaAs((1)over-bar(1)over-bar(1)over-bar)2x2 reconstruction by automated tensor LEED

Article

关键词: PLANE-WAVE METHOD;    ATOMIC-STRUCTURE;    SURFACE;    GAAS(111);    MODEL;   

DOI  :  10.1103/PhysRevB.59.9775

来源: SCIE

【 摘 要 】

The multilayer atomic coordinates for the GaAs((1) over bar (1) over bar (1) over bar)(2 x2) 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. [S0163-1829(99)15115-4].

【 授权许可】

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