Premium
Back Cover: Phys. Status Solidi RRL 7‐8/2009
Publication year - 2009
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200990010
Subject(s) - cover (algebra) , anisotropy , dimer , diffusion , surface (topology) , condensed matter physics , crystallography , physics , materials science , chemistry , nanotechnology , mathematics , thermodynamics , geometry , quantum mechanics , engineering , nuclear magnetic resonance , mechanical engineering
The Rapid Research Letter by Min Xiong et al. on p. 257ff. focuses on the adsorption and diffusion properties of an In adatom deposited on GaSb surfaces with different dimer structure. Potential energy surfaces (PES) of such structures are given to investigate the different distribution and bonding configuration of the adsorption sites. The PES results indicate that the Sb–Sb homodimer row can significantly reduce the adatom diffusion barrier along the [110] direction, which is remarkable for the structure with Ga–Sb heterodimers. Furthermore, the calculations of diffusion coefficients demonstrate that the surface diffusion anisotropy along orthogonal 〈110〉 directions is reversed on surfaces with changed dimer structures. This mechanism can be utilized to interpret the structure anisotropy in the epitaxial growth on the GaSb surface.