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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Friday, 23 July 2004
(at 13:45 in room Phy 5.0.20)
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Carbon nanotubes as candidates for spintronics devices

Stefan Krompiewski

Institute of Molecular Physics
Polish Academy of Sciences
  Poland  






Carbon nanotubes (CNTs) seem to be the most promising new materials which can in the near future revolutionize the conventional electronics. In contrast to silicon-based devices, the molecular ones (incl. CNT) can successfully cope with the more and more demanding miniaturization requirements without worsening their multi-functional properties. Most probably CNTs are also good candidates for spintronics applications in view of their unusually long spin diffusion length. When sandwiched between ferromagnetic electrodes, a CNT behaves like a spacer in (already) traditional spin-valves, leading quite often to a considerable giant magneto-resistance effect (GMR). This talk will be devoted to reviewing the most relevant topics to the spin-polarized transport problem in the CNTs, including: (i) the role of the internal molecular structure, (ii) the importance of the molecule/electrode coupling, and (iii) the effect of an accompanying charge transfer. Finally, the ongoing scientific debate on (iv) whether or not carbon-based nanostructures can be intrinsically magnetic will be also addressed.



slides (pdf)

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