A SPIN POLARIZATION INVERSION OF ULTRA-SHORT SINGLE-WALLED CARBON NANOTUBES (0, 9) IN A STRONG ELECTRIC FIELD
DOI:
https://doi.org/10.17308/kcmf.2017.19/174Keywords:
спин, спинтроника, спиновая поляризация, углеродные нанотрубкиAbstract
Results of the numerical simulation of the electronic structure of ultra–short single-walled carbon nanotubes (0, 9) of D3h, D3d and D3symmetries at singlet and triplet spin states under an applied electric field were presented. The dependencies of the energy gap, ionization potential, electron affinity and work function on the length of nanotubes at the singlet and triplet spin state were described. It was revealed, that the spin-dependent field-induced electronic structure restructuring determines the change of the spin channel resistance. The critical electric field value ~0.5 V/A inverts spin polarization The carbon nanotubes can act as spin filter and can be used for spintronic logic gates design, that makes nanotubes promising material for spintronic implementation.
ACKNOWLEDGEMENTS
This work was supported by the Russian Foundation for Basic Research (research project no. 16-32-00926 mol_a).
Keywords: spin, spintronic, spin polarization cabron nanotubes
