A theoretical description of ESR in 1D interacting metals is given, with primary emphasis on carbon nanotubes. The spin-orbit coupling is derived, and the resulting ESR spectrum is analyzed by field theory and exact diagonalization. Drastic differences in the ESR spectra of single-wall and multi-wall nanotubes are found. For single-wall tubes, the predicted double peak spectrum could reveal spin-charge separation.
@article{arxiv.cond-mat/0110352,
title = {Spin-orbit coupling and ESR theory for carbon nanotubes},
author = {A. De Martino and R. Egger and K. Hallberg and C. A. Balseiro},
journal= {arXiv preprint arXiv:cond-mat/0110352},
year = {2009}
}