Skin Effect Analysis and Comparison for Carbon-Based Interconnects at 5nm Technology Node

Abstract

The impacts of skin effects on the performance of carbon-based interconnects have been analyzed and compared at the 5 nm technology node in this paper. According to the results, in the range of 20 GHz frequency, the skin depths of multilayer graphene nanoribbon (MLGNR) global interconnects are on average 52% greater than multiwall carbon nanotube (MWCNT) wires at 5nm technology node. Our simulations demonstrate that in the presence of skin effect at high frequencies, MLGNR interconnects lead to lower delay and power consumption than their MWCNT counterparts. According to the results, the delays of MLGNR interconnects are, on average, 46% lower than those of MWCNTs at the 5 nm technology node. Moreover, power consumptions of MLGNR are, on average, 3% lower than MWCNT in the presence of skin effects. Additionally, the results of time domain analysis show that the noise amplitude at the end of the MLGNR victim line is smaller than that of the MWCNT interconnect at 10GHz frequency.