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Spin-dependent transport through a magnetic carbon nanotube-molecule junction

J. Chem. Phys. 124, 201107 (2006); doi:10.1063/1.2202739

Published 23 May 2006

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C. Zhang, L.-L. Wang, and H.-P. Cheng
Department of Physics and Quantum Theory Project, University of Florida, Gainesville, Florida 32611

X.-G. Zhang
Center for Nanophase Materials Sciences and Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

Y. Xue
College of Nanoscale Science and Engineering, University at Albany-SUNY, Albany, New York 12203
The electronic structure and spin-dependent conductance of a magnetic junction consisting of two Fe-doped carbon nanotubes and a C60 molecule are investigated using a first-principles approach that combines the density functional theory with the nonequilibrium Greens function technique. The tunneling magnetoresistance ratio is found to be 11%. The density of states and transmission coefficient through the molecular junction are analyzed and compared to layered magnetic tunneling junctions. Our findings suggest new possibilities for experiments and for future technology. ©2006 American Institute of Physics
History: Received 3 February 2006; accepted 13 April 2006; published 23 May 2006
Permalink: http://link.aip.org/link/?JCPSA6/124/201107/1
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KEYWORDS and PACS

Keywords
PACS
  • 72.25.Mk
    Spin transport through interfaces
  • 71.20.Tx
    Electronic structure of fullerenes and related materials; intercalation compounds
  • 72.15.Gd
    Galvanomagnetic and other magnetotransport effects (metals/alloys)
  • 73.20.At
    Surface states, band structure, electron density of states
  • 73.22.-f
    Electronic structure of nanoscale materials including clusters, nanoparticles, nanotubes, and nanocrystals
  • 75.47.Pq
    Magnetotransport in other materials, excluding manganites, metals, and alloys
  • YEAR: 2006

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
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