First-principles study of graphene under c-HfO2(111) layers: Electronic structures and transport properties

作者：Kaneko Tomoaki^*; Ohno Takahisa

来源：Applied Physics Letters, 2016, 109(8): 083105.

DOI：10.1063/1.4961112

We investigated the electronic properties, stability, and transport of graphene under c-HfO2(111) layers by performing first-principles calculations with special attention to the chemical bonding between graphene and HfO2 surfaces. When the interface of HfO2/graphene is terminated by an O layer, the linear dispersion of graphene is preserved and the degradation of transport is suppressed. For other interface structures, HfO2 is tightly adsorbed on graphene and the transport is strictly limited. In terms of the stability of the interface structures, an O-terminated interface is preferable, which is achieved under an O-deficient condition. Published by AIP Publishing.

• 出版日期2016-8-22