Spin-orbit coupling and electron spin resonance theory for carbon nanotubes.
A theoretical description of electron spin resonance (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 using a low-energy field theory. Drastic differences in the ESR spectra of single-wall and multiwall nanotubes are found. For single-wall tubes, the predicted double peak spectrum is linked to spin-charge separation. For multiwall tubes, a single narrow asymmetric peak is expected.
De Martino
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A
Institut für Theoretische Physik, Heinrich-Heine Universität, D-40225 Düsseldorf, Germany.
Egger
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R
Hallberg
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K
Balseiro
C A
CA