Krompiewski, S. and Cuniberti, Gianaurelio (2007) Ballistic magnetoresistance in small-size carbon nanotube devices. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310 (2). pp. 2439-2441. ISSN 0304-8853, 1873-4766
Full text not available from this repository. (Request a copy)Abstract
We theoretically study the magnetoresistance of single wall carbon nanotubes (SWCNTs) in the ballistic transport regime, using a standard tight-binding approach. The main attention is directed to spin-polarized electrical transport in the presence of either axial or perpendicular magnetic field. The method takes into account both Zeeman splitting as well as size and chirality effects. These factors ( along with a broadening of energy levels due to a strong nanotube/electrode coupling) lead, in ultra small SWCNTs, to serious modi. cations in pro. le of the Aharonov-Bohm oscillations. Other noteworthy findings are that in the parallel configuration ( axial magnetic field) the ballistic magnetoconductance is negative ( positive) for armchair (semiconducting zigzag) nanotubes, whereas in the perpendicular configuration the magnetoresistance is nearly zero both for armchair and zigzag SWCNTs. (c) 2006 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TRANSPORT; carbon nanotubes; spin-dependent transport; magnetoresistance |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Gianaurelio Cuniberti |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Dec 2020 11:16 |
| Last Modified: | 21 Dec 2020 11:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33120 |
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