2026-06-08T01:01:18Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/337012023-08-25T19:23:15Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
González-Santander de la Cruz, Clara
author
Domínguez-Adame Acosta, Francisco
author
Hilke, M.
author
Roemer, R. A.
2023-06-19T13:26:29Z
2023-06-19T13:26:29Z
2013-10
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.orghttp://arxiv.org/abs/1308.5727
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.
eng
Localisation and finite-size effects in graphene flakes
journal article
URL
https://docta.ucm.es/bitstreams/1e5f44bf-fa25-413a-9c40-ba1407c1c74b/download
File
MD5
30d570013c7092be3536234037ad19b2
1218282
application/pdf
Dguez-Adame04.pdf
URL
https://docta.ucm.es/bitstreams/60bc1545-5439-4d9a-975f-51faef1b89da/download
File
MD5
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application/pdf
Dguez-Adame04preprint.pdf