| Autor: |
Alexandrova, Anastassia N, Nechay, Michael R, Lydon, Brian R, Buchan, Daniel P, Yeh, Alex J, Tai, Ming-Hei, Kostrikin, Ivan P, Gabrielyan, Lilit |
| Rok vydání: |
2013 |
| Předmět: |
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| Popis: |
Most binary materials formed by early group 13 and 15 elements are semiconductors identical in their structures and properties. We show that in the ultra-small cluster regime these materials are markedly different. Among X(X = B, Al, Ga; Y = P, As), lighter clusters are planar, and heavier clusters are compact and three-dimensional. The difference is owed to the interplay between covalency and delocalized non-directional bonding in these systems. If the sp-hybridization in the constituent elements is energetically affordable and leads to strong directional overlap, the bonding is covalent and the cluster is flat. Otherwise, the cluster is three-dimensional. © 2013 Elsevier B.V. All rights reserved. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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