Engineering the Band Structure of Nanoparticles by an Incommensurate Cover Layerстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 13 января 2015 г.
Аннотация:The electronic properties of nanometer size Au(111) vacancy islands are modified by covering the islands with an atomically thin NaCl(001) layer. The large-scale commensurability between the atomic lattices of the cover layer and the islands gives rise to various Moire-effect-induced standing wave patterns of which the periodicity and orientation depend on the relative angle between the lattices. The observed standing wave patterns are accompanied by the formation of multiple band gaps resulting from the Moire-effect-related periodic potential. Moreover, the energy level quantization and the coverlayer-induced energy shift give rise to partial depopulation of the NaCl/Au interface state. Targeted use of a thin covering layer and the resulting Moire-effect-related potential offers yet unexploited possibilities to conveniently modify the electronic structure of nanoparticles.