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Temperature dependence of the partially localized state in a 2D molecular nanoporous network

Piquero-Zulaica, Ignacio and Nowakowska, Sylwia and Enrique Ortega, J. and Stohr, Meike and Gade, Lutz H. and Jung, Thomas A. and Lobo-Checa, Jorge. (2017) Temperature dependence of the partially localized state in a 2D molecular nanoporous network. Applied Surface Science, 391 (A, SI). pp. 39-43.

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Official URL: http://edoc.unibas.ch/54022/

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Abstract

Two-dimensional organic and metal-organic nanoporous networks can scatter surface electrons, leading to their partial localization. Such quantum states are related to intrinsic surface states of the substrate material. We further corroborate this relation by studying the thermally induced energy shifts of the electronic band stemming from coupled quantum states hosted in a metal-organic array formed by a perylene derivative on Cu(111). We observe by angle-resolved photoemission spectroscopy (ARPES), that both, the Shockley and the partially localized states, shift by the same amount to higher binding energies upon decreasing the sample temperature, providing evidence of their common origin. Our experimental approach and results further support the use of surface states for modelling these systems, which are expected to provide new insight into the physics concerning partially confined electronic states: scattering processes, potential barrier strengths, excited state lifetimes or the influence of guest molecules. (C) 2016 Elsevier B.V. All rights reserved.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik
UniBasel Contributors:Jung, Thomas A. and Nowakowska, Sylwia
Item Type:Article, refereed
Publisher:Elsevier
ISSN:0169-4332
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:22 Feb 2017 13:57
Deposited On:22 Feb 2017 13:57

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