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Electron spin resonance of single‐walled carbon nanotubes and related structures
Author(s) -
Náfrádi B.,
Nemes N. M.,
Fehér T.,
Forró L.,
Kim Y.,
Fischer J. E.,
Luzzi D. E.,
Simon F.,
Kuzmany H.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200669218
Subject(s) - carbon nanotube , electron paramagnetic resonance , laser linewidth , materials science , resonance (particle physics) , relaxation (psychology) , spin (aerodynamics) , carbon fibers , condensed matter physics , metal , curie temperature , line (geometry) , electron , paramagnetism , nanotechnology , nuclear magnetic resonance , atomic physics , ferromagnetism , composite material , physics , metallurgy , optics , psychology , social psychology , laser , geometry , mathematics , composite number , thermodynamics , quantum mechanics
We report new results on the electron spin resonance of single walled carbon nanotubes, peapods and double walled carbon nanotubes. A small ESR line is present in well purified samples and its temperature dependence reveals a striking ‘super‐Curie’ paramagnetic rise. In addition, we identify a narrower line in peapod and DWNT samples, which displays similar behavior. The linewidth of both inner and outer species are metallic and the outer tube's resonance broadens upon growth of the inner tubes. We observe a sudden decrease of relaxation rate below 20 K, in accordance with the opening of a spin‐gap. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)