Fig. 5

Kondo effect from the spin embedded in a lifted chGNR junction. a Schematics of the process where the tip of the STM is first approached to the ZZ site of a Type 3 junction (gray dashed arrow) and then retracted to lift the junction away from the substrate (red arrow), resulting in a suspended junction between tip and substrate. b Simultaneously recorded conductance curve (V = −50 mV) during the approach, jump to contact and lift processes. c dI/dV spectra recorded at the specific heights indicated with colored points on the curves in b. d Full widths at half maximum (FWHM) of spectra acquired in the retraction process (points in c), extracted from a fit using the Frota function⁴⁹