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Title: Aromatic molecules as spintronic devices

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.
Authors:
 [1] ;  [2] ;  [3] ;  [1]
  1. Instituto de Alta investigación, Universidad de Tarapacá, Casilla 7D Arica (Chile)
  2. (Colombia)
  3. Departamento de Física, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso (Chile)
Publication Date:
OSTI Identifier:
22253438
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 140; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; GREEN FUNCTION; HAMILTONIANS; INTERACTIONS; MAGNETIC FIELDS; MAGNETORESISTANCE; MOLECULES; SPIN