Identifying the electron spin resonance of conduction electrons in alkali doped SWCNTs

Galambos, M. and Fabian, G. and Simon, F. and Ciric, L. and Forro, L. and Korecz, L. and Rockenbauer, A. and Koltai, J. and Zolyomi, V. and Rusznyak, A. and Kurti, J. and Nemes, N. M. and Dora, B. and Peterlik, H. and Pfeiffer, R. and Kuzmany, H. and Pichler, T. (2009) Identifying the electron spin resonance of conduction electrons in alkali doped SWCNTs. physica status solidi (b), 246 (11-12). pp. 2760-2763. ISSN 0370-1972

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We study the electron spin resonance (ESR) signal of pristine and potassium doped SWCNTs. We identify signals of a super-paramagnetic background, a low intensity impurity, and of the conduction electron spin resonance (CESR). The latter only appears upon the alkali atom doping. To identify the CESR signal, we critically assess whether it could come from residual graphitic carbon, which we clearly exclude. We give accurate values for the signal intensities and the corresponding concentration of spins and for the g-factors. The CESR signal intensity allows to determine the density of states on the SWCNT assembly.

Item Type: Journal Article
Journal or Publication Title: physica status solidi (b)
Additional Information: 23rd Winterschool on Electronic Properties of Novel Materials, Kirchberg, GERMANY, MAR 14, 2009
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/qc
Departments: Faculty of Science and Technology > Physics
ID Code: 55851
Deposited By: ep_importer_pure
Deposited On: 16 Jul 2012 08:44
Refereed?: Yes
Published?: Published
Last Modified: 01 Jan 2020 07:58

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