Spin-resolved Quantum Interference in Graphene
arXiv:0904.2212 · doi:10.1038/nphys1421
Abstract
The unusual electronic properties of single-layer graphene make it a promising material system for fundamental advances in physics, and an attractive platform for new device technologies. Graphene's spin transport properties are expected to be particularly interesting, with predictions for extremely long coherence times and intrinsic spin-polarized states at zero field. In order to test such predictions, it is necessary to measure the spin polarization of electrical currents in graphene. Here, we resolve spin transport directly from conductance features that are caused by quantum interference. These features split visibly in an in-plane magnetic field, similar to Zeeman splitting in atomic and quantum dot systems. The spin-polarized conductance features that are the subject of this work may, in the future, lead to the development of graphene devices incorporating interference-based spin filters.
12 pages, 4 figures, plus supplementary (11 pages, 9 figures)
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Cited by in corpus (26)
- Spin States in Graphene Quantum Dots
- Full electrical control of Charge and Spin conductance through Interferometry of Edge States in Topological Insulators
- Defect-mediated spin relaxation and dephasing in graphene
- Mechanically Controlled Quantum Interference in Graphene Break Junctions
- Rippled Graphene in an In-Plane Magnetic Field: Effects of a Random Vector Potential
- Quantum interference assisted spin filtering in graphene nanoflakes
- Electronic Excited States in Bilayer Graphene Double Quantum Dots
- Spin-orbit coupling and broken spin degeneracy in multilayer graphene
- Non-Ergodicity & Microscopic Symmetry Breaking of the Conductance Fluctuations in Disordered Mesoscopic Graphene
- Evidence for spin memory in the electron phase coherence in graphene
- Edge effects in graphene nanostructures: II. Semiclassical theory of spectral fluctuations and quantum transport
- Graphene-based spin-pumping transistor
- Hysteresis loops of the magnetoconductance in graphene devices
- Interaction-induced enhancement of -factor in graphene
- Ballistic quantum transport through Ge/Si core/shell nanowires
- Dirac Fermion Quantum Hall Antidot in Graphene
- Chiral phase transition in a planar four-Fermi model in a tilted magnetic field
- Signature of gate-tunable magnetism in graphene grafted with Pt-porphyrins
- Spin polarization and g-factor enhancement in graphene nanoribbons in magnetic field
- Spin dependent quantum interference in non-local graphene spin valves
- Stability of destructive interference antiresonances in electron transport through graphene nanostructures
- Spin polarization dependence of quasiparticle properties in graphene
- Inducing and controlling magnetism in the honeycomb lattice through harmonic trapping potential
- Graphene as a non-magnetic spin-current lens
- Effective tunnel conductance and effective ac conductivity of randomly strained graphene
- Manipulating the fully spin-polarized edge currents in graphene ribbon