Aromatic molecules as spintronic devices

Journal Article · Fri Mar 14 00:00:00 EDT 2014 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4867782· OSTI ID:22253438

Orellana, P. A. ^[1]; Laroze, D. ^[2]

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1. Departamento de Física, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso (Chile)
2. Instituto de Alta investigación, Universidad de Tarapacá, Casilla 7D Arica (Chile)

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.

• OSTI ID: 22253438
• Journal Information: Journal of Chemical Physics, Vol. 140, Issue 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GREEN FUNCTION
HAMILTONIANS
INTERACTIONS
MAGNETIC FIELDS
MAGNETORESISTANCE
MOLECULES
SPIN