Gate-tunable graphene spin valve

2007/06/12 by Sungjae Cho, Yung-Fu Chen, Yung‐Fu Chen +1 · 6 citations
Engineering · Materials Science · Physics and Astronomy · #Graphene research and applications #Molecular Junctions and Nanostructures #Quantum and electron transport phenomena #cond-mat.mes-hall

paper · pdf · doi:10.1063/1.2784934

published as Applied Physics Letters 91, 123105 (2007)

arxiv created 2007/06/12 · openalex publication_date 2007/09/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The authors perform nonlocal four-probe spin-valve experiments on graphene contacted by ferromagnetic Permalloy electrodes. They observe sharp switching and often sign reversal of the nonlocal resistance at the coercive field of the electrodes, indicating the presence of a spin current between injector and detector. The nonlocal spin-valve signal changes magnitude and sign with back-gate voltage, and is observed up to T=300K. The gate voltage variation of the spin-valve signal may result from quantum-coherent transport, as evidenced by Fabry-Pérot-like oscillations of the current.

Citations

• Two-dimensional atomic crystals
• Rashba spin–orbit coupling and spin precession in carbon nanotubes

Cited by

• Magnetoresistance of graphene-based spin valves
• Manipulation of Spin Transport in Graphene by Surface Chemical Doping
• Unscreened Coulomb Interactions and the Quantum Spin Hall Phase in Neutral Zigzag Graphene Ribbons
• Electron-Hole Asymmetry of Spin Injection and Transport in Single-Layer Graphene
• Electrical detection of spin precession in single layer graphene spin valves with transparent contacts
• Electronic properties of graphene and graphene nanoribbons with ‘pseudo-Rashba’ spin-orbit coupling