Spin relaxation times of single-wall carbon nanotubes

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dc.citation.firstpage041401(R)
dc.citation.journalTitlePhysical Review B
dc.citation.volumeNumber88
dc.contributor.authorRice, W.D.
dc.contributor.authorWeber, R.T.
dc.contributor.authorNikolaev, P.
dc.contributor.authorArepalli, S.
dc.contributor.authorBerka, V.
dc.contributor.authorTsai, A.-L.
dc.contributor.authorKono, J.
dc.date.accessioned2013-08-02T16:15:05Z
dc.date.available2013-08-02T16:15:05Z
dc.date.issued2013
dc.description.abstractWe have measured temperature (T )- and power-dependent electron spin resonance in bulk single-wall carbon nanotubes to determine both the spin-lattice and the spin-spin relaxation times, T1 and T2. We observe that T −1 1 increases linearly with T from 4 K to 100 K, whereas T −1 2 decreases by over a factor of two when T is increased from 3 K to 300 K. We interpret the T −1 1 ∝ T trend as spin-lattice relaxation via interaction with conduction electrons (Korringa law) and the decreasing T dependence of T −1 2 as motional narrowing. By analyzing the latter, we find the spin hopping frequency to be 285 GHz. Last, we show that the Dysonian line shape asymmetry follows a three-dimensional variable-range hopping behavior from 3 K to 20 K; from this scaling relation, we extract a localization length of the hopping spins to be ∼100 nm.
dc.embargo.termsnone
dc.identifier.citationRice, W.D., Weber, R.T., Nikolaev, P., et al.. "Spin relaxation times of single-wall carbon nanotubes." <i>Physical Review B,</i> 88, (2013) American Physical Society: 041401(R). http://dx.doi.org/10.1103/PhysRevB.88.041401.
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.88.041401
dc.identifier.urihttps://hdl.handle.net/1911/71724
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.titleSpin relaxation times of single-wall carbon nanotubes
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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