Table 3 Analysis of the simulation results for the contact resistance. Ballistic resistance of graphene in the semi-infinite lead applied to the symmetry point (point A or B for medium and short structures, respectively) of the structure (Graphene R) and resistance of the graphene-metal contacts (R c) for different metals and length of the simulated structure. Teff is the ratio of Graphene R to Total R and depends on the metal species but not on the length of the structure.
Metal | Short structure | Medium structure | ||||||
|---|---|---|---|---|---|---|---|---|
R C (Ω · μm) | ΔE F (eV) | Graphene R (Ω · μm) | T eff | R C (Ω · μm) | ΔE F (eV) | Graphene R (Ω · μm) | T eff | |
Cu | 374 | −0.336 | 46.6 | 0.12 | 1153 | −0.166 | 70.6 | 0.06 |
Ni | 120 | −0.136 | 83 | 0.69 | 360 | −0.036 | 245 | 0.74 |
Pd | 2076 | −0.036 | 230 | 0.11 | 2899 | −0.025 | 273 | 0.12 |
Pt | 123 | 0.209 | 58.3 | 0.47 | 209 | 0.155 | 77 | 0.44 |
