Spin-orbit coupling and ESR theory for carbon nanotubes
A. De Martino, R. Egger, K. Hallberg, C. A. Balseiro
Abstract
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.
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