Low-noise submicron channel graphene nanoribbons

Guangyu Xu; Jingwei Bai; Torres, Carlos M.; Song, Emil B.; Jianshi Tang; Yi Zhou; Xiangfeng Duan; Yuegang Zhang; Wang, Kang L.
August 2010
Applied Physics Letters;8/16/2010, Vol. 97 Issue 7, p073107
Academic Journal
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.


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