“Fabrication and characterization of high-mobility graphene p-n-p junctions encapsulated by hexagonal boron nitride”
S. Masubuchi, S. Morikawa, M. Onuki, K. Iguchi, K. Watanabe, T. Taniguchi, and T. Machida
Japanese Journal of Applied Physics 52, 110105 (2013)
DOI:10.7567/JJAP.52.110105