Spin-orbit coupling and electron spin resonance for interacting electrons in carbon nanotubes

Details Spin-orbit coupling and electron spin resonance for interacting electrons in carbon nanotubes Spin-orbit coupling and electron spin resonance for interacting electrons in carbon nanotubes

2003-05-16

arxiv.org/abs/cond-mat/0305388v2

J. Phys.: Condens. Matter 16 (2004) S1437-S1452

Physics

Condensed Matter

Strongly Correlated Electrons

19 pages, 4 figures, invited review article for special issue in J. Phys. Cond. Mat., published version

Scientific paper

We review the theoretical description of spin-orbit scattering and electron spin resonance in carbon nanotubes. Particular emphasis is laid on the effects of electron-electron interactions. The spin-orbit coupling is derived, and the resulting ESR spectrum is analyzed both using the effective low-energy field theory and numerical studies of finite-size Hubbard chains and two-leg Hubbard ladders. For single-wall tubes, the field theoretical description predicts a double peak spectrum linked to the existence of spin-charge separation. The numerical analysis basically confirms this picture, but also predicts additional features in finite-size samples.

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