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oai:docta.ucm.es:20.500.14352/337012023-08-25T19:23:15Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc González-Santander de la Cruz, Clara author Domínguez-Adame Acosta, Francisco author Hilke, M. author Roemer, R. A. author 2013-10 We show that electron states in disordered graphene, with an onsite potential that induces inter-valley scattering, are localised for all energies at disorder as small as 1/6 of the band width of clean graphene. We clarify that, in order for this Anderson-type localisation to be manifested, graphene flakes of size approximate to 200 x 200 nm(2) or larger are needed. For smaller samples, due to the surprisingly large extent of the electronic wave functions, a regime of apparently extended (or even critical) states is identified. Our results complement earlier studies of macroscopically large samples and can explain the divergence of results for finite-size graphene flakes. 0295-5075 10.1209/0295-5075/104/17012 https://hdl.handle.net/20.500.14352/33701 http://dx.doi.org/10.1209/0295-5075/104/17012 http://iopscience.iop.org http://arxiv.org/abs/1308.5727 Localisation and finite-size effects in graphene flakes