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According to the electrostatic contact analysis of Ref. [42], applicable also for a bilayer, the contact capacitance amounts to (Equation presented) for Au/Cr/Au contacts similar to ours. Hence, we may estimate the real part (Equation presented) of the impedance at the contact; (Equation presented) in parallel with contact capacitance (Equation presented). Using the above value for (Equation presented) and a contact area of 4 (Equation presented), we obtain (Equation presented) at (Equation presented) 1 GHz, which yields about 100 (Equation presented) instead of 1 (Equation presented) for the high-frequency contact resistance
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According to the electrostatic contact analysis of Ref. [42], applicable also for a bilayer, the contact capacitance amounts to (Equation presented) for Au/Cr/Au contacts similar to ours. Hence, we may estimate the real part (Equation presented) of the impedance at the contact; (Equation presented) in parallel with contact capacitance (Equation presented). Using the above value for (Equation presented) and a contact area of 4 (Equation presented), we obtain (Equation presented) at (Equation presented) 1 GHz, which yields about 100 (Equation presented) instead of 1 (Equation presented) for the high-frequency contact resistance.
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