Fig. 5: Comparison of experimental electron occupation and theoretical calculations.
From: Systematic modulation of charge and spin in graphene nanoribbons on MgO
a Energy level alignment scheme for short even- and long odd-integer charged GNRs on top of a MgO layer (band gap 7.2 eV50), respectively. The neutral level of the GNRs is referenced by the binding energy of the two symmetry-protected topological end states (SPTEs). b Fit of the grand canonical charging model to the experimentally observed charge per precursor unit as a function of ribbon length for the two types of chiral GNRs. Stripes in grey correspond to odd-integer excess charge. The number in each data point is the obtained \(\left\langle q\right\rangle\) value.
