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One-dimensional potential for image-potential states on graphene
dc.contributor.author | De Andres, P. L. | |
dc.contributor.author | Echenique Landiribar, Pedro Miguel | |
dc.contributor.author | Niesner, D. | |
dc.contributor.author | Fauster, Th. | |
dc.contributor.author | Rivacoba Ochoa, Alberto Luis | |
dc.date.accessioned | 2016-02-25T16:18:35Z | |
dc.date.available | 2016-02-25T16:18:35Z | |
dc.date.issued | 2014-02-05 | |
dc.identifier.citation | New Journal of Physics 16 : (2014) // Article ID 023012 | es |
dc.identifier.issn | 1367-2630 | |
dc.identifier.uri | http://hdl.handle.net/10810/17426 | |
dc.description.abstract | In the framework of dielectric theory, the static non-local self-energy of an electron near an ultra-thin polarizable layer has been calculated and applied to study binding energies of image-potential states near free-standing graphene. The corresponding series of eigenvalues and eigenfunctions have been obtained by numerically solving the one-dimensional Schrodinger equation. The imagepotential state wave functions accumulate most of their probability outside the slab. We find that the random phase approximation (RPA) for the nonlocal dielectric function yields a superior description for the potential inside the slab, but a simple Fermi-Thomas theory can be used to get a reasonable quasi-analytical approximation to the full RPA result that can be computed very economically. Binding energies of the image-potential states follow a pattern close to the Rydberg series for a perfect metal with the addition of intermediate states due to the added symmetry of the potential. The formalism only requires a minimal set of free parameters: the slab width and the electronic density. The theoretical calculations are compared with experimental results for the work function and image-potential states obtained by two-photon photoemission. | es |
dc.language.iso | eng | es |
dc.publisher | IOP Publishing | es |
dc.rights | info:eu-repo/semantics/openAccess | es |
dc.subject | superatom states | es |
dc.subject | boron-nitride | es |
dc.subject | graphite | es |
dc.subject | electron | es |
dc.subject | surfaces | es |
dc.subject | energy | es |
dc.subject | prediction | es |
dc.subject | transport | es |
dc.subject | carbon | es |
dc.subject | films | es |
dc.title | One-dimensional potential for image-potential states on graphene | es |
dc.type | info:eu-repo/semantics/article | es |
dc.rights.holder | Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. | es |
dc.relation.publisherversion | http://iopscience.iop.org/article/10.1088/1367-2630/16/2/023012/meta;jsessionid=AEE1C7B1CE82926DC58AF645AD0E7C95.c3.iopscience.cld.iop.org#artAbst | es |
dc.identifier.doi | 10.1088/1367-2630/16/2/023012 | |
dc.departamentoes | Física de materiales | es_ES |
dc.departamentoeu | Materialen fisika | es_ES |
dc.subject.categoria | PHYSICS AND ASTRONOMY |