2009 Fiscal Year Final Research Report
Magnetotransport Studies of the carbon nanotubes by contactless method
| Project/Area Number |
20740183
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | Tohoku University |
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Principal Investigator |
OSHIMA Yugo Tohoku University, 加藤分子物性研究室, 研究員 (10375107)
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| Project Period (FY) |
2008 – 2009
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| Keywords | カーボンナノチューブ / 磁気抵抗 / AB効果 / バリスティック伝導 / 非接触伝導 / 強磁場 |
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| Research Abstract |
The intrinsic magnetotransport effect of the single-walled carbon nanotube (SWNT) has been observed by the cavity perturbation technique, which is a noncontact method for evaluating transport properties. The inverse Q factor of the cavity resonator, which corresponds to the resistance of the sample, shows a linear increase as a function of the magnetic field. The angular and tube diameter dependence of oriented SWNT thin films, and measurements using sorted SWNTs reveal that the observed positive magnetoresistance is due to the Aharonov-Bohm effect of metallic nanotubes.
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