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Band formation from coupled quantum dots formed by a nanoporous network on a copper surface

AutorLobo-Checa, Jorge ; Matena, Manfred; Müller, Kathrin; Dil, Jan Hugo; Meier, Fabian; Gade, Lutz H.; Jung, Thomas A.; Stöhr, Meike
Palabras claveCoupled quantum systems
Quantum dots
Quantum confinement
Crystalline solids
Organic nanoporous network
Electronic band structure
Pore states
Fecha de publicación17-jul-2009
EditorAmerican Association for the Advancement of Science
CitaciónScience 325(5938): 300-303 (2009)
ResumenThe properties of crystalline solids can to a large extent be derived from the scale and dimensionality of periodic arrays of coupled quantum systems such as atoms and molecules. Periodic quantum confinement in two dimensions has been elusive on surfaces, mainly because of the challenge to produce regular nanopatterned structures that can trap electronic states. We report that the two-dimensional free electron gas of the Cu(111) surface state can be trapped within the pores of an organic nanoporous network, which can be regarded as a regular array of quantum dots. Moreover, a shallow dispersive electronic band structure is formed, which is indicative of electronic coupling between neighboring pore states.
Descripción4 pages, 3 figures.-- Supporting information (Materials and Methods, SOM Text, Suppl. figs. S1-S7, Suppl Refs, 15 pages) available at: http://science-mag.aaas.org/cgi/data/325/5938/300/DC1/1
Versión del editorhttp://dx.doi.org/10.1126/science.1175141
ISSN0036-8075 (Print)
1095-9203 (Online)
Aparece en las colecciones: (CIN2) Artículos
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