2015/11/30 by Luca Banszerus, Michael Schmitz, Stephan Engels +5 · 1 citation
Physics and Astronomy · #cond-mat.mes-hall
paper · pdf · doi:10.1021/acs.nanolett.5b04840
published as Nano Lett. 16, 1387 (2016) · 13 pages, 3 figures
arxiv created 2016/01/12 · arxiv updated 2016/02/24
We report on ballistic transport over more than 28 μm in graphene grown by chemical vapor deposition (CVD) that is fully encapsulated in hexagonal boron nitride. The structures are fabricated by an advanced dry van-der-Waals transfer method and exhibit carrier mobilities of up to three million cm2/(Vs). The ballistic nature of charge transport is probed by measuring the bend resistance in cross- and square-shaped devices. Temperature dependent measurements furthermore prove that ballistic transport is maintained exceeding 1 μm up to 200 K.