Resistivity of Rotated Graphite–Graphene Contacts Tarun Chari Rebeca Ribeiro-Palau Cory R. Dean Kenneth Shepard 10.1021/acs.nanolett.6b01657.s001 https://acs.figshare.com/articles/journal_contribution/Resistivity_of_Rotated_Graphite_Graphene_Contacts/3425825 Robust electrical contact of bulk conductors to two-dimensional (2D) material, such as graphene, is critical to the use of these 2D materials in practical electronic devices. Typical metallic contacts to graphene, whether edge or areal, yield a resistivity of no better than 100 Ω μm but are typically >10 kΩ μm. In this Letter, we employ single-crystal graphite for the bulk contact to graphene instead of conventional metals. The graphite contacts exhibit a transfer length up to four-times longer than in conventional metallic contacts. Furthermore, we are able to drive the contact resistivity to as little as 6.6 Ω μm<sup>2</sup> by tuning the relative orientation of the graphite and graphene crystals. We find that the contact resistivity exhibits a 60° periodicity corresponding to crystal symmetry with additional sharp decreases around 22° and 39°, which are among the commensurate angles of twisted bilayer graphene. 2016-05-31 00:00:00 bilayer graphene bulk conductors 2 D materials crystal symmetry graphite contacts exhibit bulk contact contact resistivity exhibits contact resistivity 6.6 Ω μ m 2 100 Ω μ m transfer length graphene crystals