title: Long distance spin communication in chemical vapour deposited graphene.
abstract: Graphene is an ideal medium for long-distance spin communication in future spintronic technologies. So far, the prospect is limited by the smaller sizes of exfoliated graphene flakes and lower spin transport properties of large-area chemical vapour-deposited (CVD) graphene. Here we demonstrate a high spintronic performance in CVD graphene on SiO2/Si substrate at room temperature. We show pure spin transport and precession over long channel lengths extending up to 16 μm with a spin lifetime of 1.2 ns and a spin diffusion length ∼6 μm at room temperature. These spin parameters are up to six times higher than previous reports and highest at room temperature for any form of pristine graphene on industrial standard SiO2/Si substrates. Our detailed investigation reinforces the observed performance in CVD graphene over wafer scale and opens up new prospects for the development of lateral spin-based memory and logic applications.
authors: Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Kemivagen 9, SE-41296 Göteborg, Sweden.
authors: M Venkata
authors: MV
authors: Kamalakar
authors: Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Kemivagen 9, SE-41296 Göteborg, Sweden.
authors: Christiaan
authors: C
authors: Groenveld
authors: Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Kemivagen 9, SE-41296 Göteborg, Sweden.
authors: André
authors: A
authors: Dankert
authors: Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Kemivagen 9, SE-41296 Göteborg, Sweden.
authors: Saroj P
authors: SP
authors: Dash