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Ortega Mateo, JoseAuthorPerez Perez, RubenAuthorPou Bell, PabloAuthorFlores Sintas, FernandoAuthorVázquez HAuthorOrtega JAuthorPerez RAuthor

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Dipole formation at metal/PTCDA interfaces: Role of the Charge Neutrality Level

Publicated to:EPL. 65 (6): 802-808 - 2004-03-01 65(6), DOI: 10.1209/epl/i2003-10131-2

Authors: Vázquez, H; Oszwaldowski, R; Pou, P; Ortega, J; Pérez, R; Flores, F; Kahn, A

Affiliations

- Author
Princeton University - Author
Universidad Autónoma de Madrid - Author

Abstract

The formation of a metal/PTCDA (3, 4, 9, 10-perylenetetracarboxylic dianhydride) interface barrier is analyzed using weak-chemisorption theory. The electronic structure of the uncoupled PTCDA molecule and of the metal surface is calculated. Then, the induced density of interface states is obtained as a function of these two electronic structures and the interaction between both systems. This induced density of states is found to be large enough (even if the metal/PTCDA interaction is weak) for the definition of a Charge Neutrality Level for PTCDA, located 2.45 eV above the highest occupied molecular orbital. We conclude that the metal/PTCDA interface molecular level alignment is due to the electrostatic dipole created by the charge transfer between the two solids.

Keywords

Astronomia / físicaBiotecnologíaCiência da computaçãoCiências biológicas iCiências biológicas iiEconomiaEducaçãoEducação físicaEngenharias iiEngenharias iiiEngenharias ivEnsinoGeneral physics and astronomyGeociênciasInterdisciplinarMatemática / probabilidade e estatísticaMateriaisMedicina iiPhysicsPhysics and astronomy (all)Physics and astronomy (miscellaneous)Physics, multidisciplinaryQuímica

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal EPL due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2004, it was in position 12/67, thus managing to position itself as a Q1 (Primer Cuartil), in the category Physics, Multidisciplinary.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-06-12:

  • WoS: 215
  • Scopus: 227
  • OpenCitations: 211

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-12:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 137 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: United States of America.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (VAZQUEZ MELIS, HECTOR) .