Low-noise submicron channel graphene nanoribbons
G. Xu, J. Bai, C.M. Torres, E.B. Song, J. Tang, Y. Zhou, X. Duan, Y. Zhang, and K.L. Wang
Appl. Phys. Lett. 97, 073107 (2010)
We present a graphene nanoribbon fabrication method based on a nanowire mask. Using a four-probe setup, single-layer nanoribbon (SLR) and bilayer nanoribbon (BLR) show low-frequency noise levels lower than (comparable to) the SLRs (BLRs) achieved by hydrogen-silsesquioxane based methods. Submicron channel SLR and BLR both show conductance quantization at 77 K, which suggests that quasi-one-dimensional quantum transport can be achieved. The conductance plateaus in BLR are less pronounced than those in SLR.