Carvalho, S. L.de Oliveira, C. R.Prado, R. A. [UNESP]2014-05-202014-05-202011-07-01Journal of Mathematical Physics. Melville: Amer Inst Physics, v. 52, n. 7, p. 21, 2011.0022-2488http://hdl.handle.net/11449/7123We study spectral properties of some discrete Dirac operators with nonzero potential only at some sparse and suitably randomly distributed positions. As observed in the corresponding Schrodinger operators, we determine the Hausdorff dimension of its spectral measure and identify a sharp spectral transition from point to singular continuous. (C) 2011 American Institute of Physics. [doi:10.1063/1.3600536]21engArtigo10.1063/1.3600536WOS:000293478000016Acesso abertoWOS000293478000016.pdf2588909357752075