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Saiz-Bretín, Marta ; Munarriz, J. ; Malyshev, Andrey ; Domínguez-Adame Acosta, Francisco | Elsevier | 2015-09-25We study electronic transport in systems comprising square graphene nanorings with a ferromagnetic insulator layer on top of them. The rings are connected symmetrically or asymmetrically to contacts. The proximity exchange interaction of electro[...]texto impreso
Munarriz, J. ; Domínguez-Adame Acosta, Francisco ; Orellana, P. A. ; Malyshev, Andrey | IOP publishing ltd | 2012-05-25We propose a novel spin filter based on a graphene nanoring fabricated above a ferromagnetic strip. The exchange interaction between the magnetic moments of the ions in the ferromagnet and the electron spin splits the electronic states, and give[...]texto impreso
We study theoretically the level shift of massless Dirac fermions in a graphene monolayer subjected to a quantizing perpendicular magnetic field under the influence of short-range impurities. A Green function method is used to obtain closed expr[...]texto impreso
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.texto impreso
Munarriz, J. ; Gaul, C. ; Malyshev, Andrey ; Orellana, P. A. ; Mueller, C. A. ; Domínguez-Adame Acosta, Francisco | American Physical Society | 2013-10We find clear signatures of spin-dependent negative differential resistance in compound systems comprising a graphene nanoribbon and a set of ferromagnetic insulator strips deposited on top of it. The periodic array of ferromagnetic strips induc[...]texto impreso
Munarriz, J. ; Domínguez-Adame Acosta, Francisco ; Malyshev, Andrey | IOP publishing ltd | 2011-09-07A new type of quantum interference device based on a graphene nanoring in which all edges are of the same type is studied theoretically. The superposition of the electron wavefunction propagating from the source to the drain along the two arms o[...]
