Journal
SOLID STATE COMMUNICATIONS
Volume 115, Issue 2, Pages 67-71Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0038-1098(00)00145-9
Keywords
semiconductors; surfaces and interfaces; electronic band structure
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Using existing and new results obtained from first-principles pseudopotential calculations, we have studied the atomic relaxation and its dependence on the chemical bonding, on III-N(110) surfaces. It is found that the characteristics of III-N(110) surfaces differ from other m-V(110) and II-VI(110) surfaces in two important aspects: a significantly reduced surface bond rotation, and a much lower binding energy of the highest occupied surface state. Furthermore the results obtained for AlN and InN corroborate our previously proposed model of a linear relationship between the vertical buckling of the top layer and the relaxed surface bond length not only for III-N, but also for III-V and II-VI semiconductors in general. (C) 2000 Elsevier Science Ltd. All rights reserved.
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