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A schematic representation of a laterally contracted Ga bilayer above a Ga-terminated (0001) substrate. The average separations between layers are z12 = 2.54 Å and z01 = 2.37 Å. The filled and open circles in layer 0 represent a time averaged image of the Ga atoms. The filled circles in layer 0 correspond to the positions at a particular time. The time averaged vertical corrugation of layer 0 is approximately 0.16 Å. Note: In this projection the laterally contracted monolayer (layer 0) has been rotated by 30° for ease of viewing. (From [46]).
Projection on the c-plane of the top two layers for the registry B structure discussed in the text. Open circles represent a 1x1 adlayer of atoms located in T1 sites. (From [46]).
Projection on the c-plane of the top two layers for registry A. The heights (h) of the Ga atoms in layer 0, relative to that of atom 1 in registry B are listed. (From [46]).
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