Spin magnetism of finite length carbon nanotubes

We apply the calculation model, based on the Hartree-Fock-Racah theory of the averaged quasi-spin multiplet degenerate open shell, to demonstrate that finite zigzag CN hyperbolic levels give rise to a lot of spectroscopic terms with the nonzero total spin and the energy, very close to that of the ground state. Hence, a very small external influence can produce parallel orientation of CN spins, which does not disappear immediately and results in the observable remanence.