Ojeda J H, Orellana P A, Laroze D
Instituto de Alta investigación, Universidad de Tarapacá, Casilla 7D Arica, Chile.
Departamento de Física, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso, Chile.
J Chem Phys. 2014 Mar 14;140(10):104308. doi: 10.1063/1.4867782.
In this paper, we study the spin-dependent electron transport through aromatic molecular chains attached to two semi-infinite leads. We model this system taking into account different geometrical configurations which are all characterized by a tight binding Hamiltonian. Based on the Green's function approach with a Landauer formalism, we find spin-dependent transport in short aromatic molecules by applying external magnetic fields. Additionally, we find that the magnetoresistance of aromatic molecules can reach different values, which are dependent on the variations in the applied magnetic field, length of the molecules, and the interactions between the contacts and the aromatic molecule.
