Munarriz, J.Domínguez-Adame Acosta, FranciscoLima, R. P. A.2023-06-202023-06-202012-08-150375-960110.1016/j.physleta.2012.10.029https://hdl.handle.net/20.500.14352/44658©2012 Elsevier B.V. All rights reserved. Work in Madrid was supported by MICINN (project MAT2010- 17180). R.P.A. Lima would like to thank CAPES via project PPCPMercosul, CNPq, and FINEP (Brazilian Research Agencies) as well as FAPEAL (Alagoas State Research Agency) for partial financial support.We study theoretically the level shift of the Dirac oscillator perturbed by any sharply peaked potential approaching a surface delta potential. A Green function method is used to obtain closed expressions for all partial waves and parities.spajournal articlehttp://dx.doi.org/10.1016/j.physleta.2012.10.029http://www.sciencedirect.comopen access538.9Klein paradoxEquationDimensionFísica de materialesFísica del estado sólido2211 Física del Estado Sólido