NT} -------------------------------------------------------------------  ![Total spin polarized density of states (t-DOS) for (a) (0,0) and (b) (00,0) SWCNTs with a single adsorbate of different types chemisorbed on top of one carbon atom in the supercell. Positive and negatives t-DOS correspond to spin up and spin down, respectively. The t-DOS for pristine (0,0) and (00,0) SWCNTs is also shown for comparison. For clarity, the curves in panel (a) and (b) have been shifted and smoothed with a Lorentzian broadening of 0.00 eV. Fermi energy is marked by the dashed lines and is set to zero in both panels. []{data-label="fig0-adsorbates0"}](figures_arXiv/t