Issue |
Europhys. Lett.
Volume 34, Number 1, April I 1996
|
|
---|---|---|
Page(s) | 31 - 36 | |
Section | Condensed matter: structure, thermal and mechanical properties | |
DOI | https://doi.org/10.1209/epl/i1996-00411-9 | |
Published online | 01 September 2002 |
Investigation of electron paramagnetic resonance in carbon tubes
1
Institute of Physics PAN - al.Lotników 32/46,
02-668 Warszawa, Poland
2
Institute of Vacuum Technology - ul.Dluga 44/50,
00-241 Warszawa, Poland
Received:
17
October
1995
Accepted:
6
February
1996
Electron paramagnetic resonance (EPR) on carbon nanotubes was measured in a wide range of temperatures, the resonance disappeared after oxidizing the tubes. The results are discussed in terms of graphite properties and a model introducing a deformation potential to describe tubular structure. It leads to persistent ring currents in the magnetic field due to the carriers circular motion around a tube. A spin–angular-momentum interaction is discussed in an attempt to explain the lack of EPR in purified carbon nanotubes.
PACS: 61.46.+w – Solid clusters (including fullerenes) and nanoparticles / 79.60.Jv – Interfaces; heterostructures; nanostructures / 76.30.Pk – Conduction electrons
© EDP Sciences, 1996
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