Detecting the spin-polarization of edge states in graphene nanoribbons

Abstract

Low dimensional carbon-based materials are interesting because they can show intrinsic $\pi$-magnetism associated to p-electrons residing in specific open-shell configurations. Consequently, during the last years there have been impressive advances in the field combining indirect experimental fingerprints of localized magnetic moments with theoretical models. In spite of that, a characterization of their spatial- and energy-resolved spin-moment has so far remained elusive. To obtain this information, we present an approach based on the stabilization of the magnetization of $\pi$-orbitals by virtue of a supporting substrate with ferromagnetic ground state. Remarkably, we go beyond localized magnetic moments in radical or faulty carbon sites: In our study, energy-dependent spin-moment distributions have been extracted from spatially extended one-dimensional edge states of chiral graphene nanoribbons. This method can be generalized to other nanographene structures, representing an essential validation of these materials for their use in spintronics and quantum technologies.

References in corpus (13)

• Energy Gaps in Graphene Nanoribbons
• Half-Metallic Graphene Nanoribbons
• Emergence of magnetism in graphene materials and nanostructures
• Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
• Spin qubits in graphene quantum dots
• Magnetic Correlations at Graphene Edges
• Spin Splitting of Dopant Edge States in Magnetic Zigzag Graphene Nanoribbons
• Substrate-Independent Growth of Atomically Precise Chiral Graphene Nanoribbons
• Topological phase transition in chiral graphene nanoribbons: from edge bands to end states
• Hyperfine Interactions in Graphene and Related Carbon Nanostructures
• Electronic Band Dispersion of Graphene Nanoribbons via Fourier-Transformed Scanning Tunneling Spectroscopy
• Edge magnetization and local density of states in chiral nanoribbons
• On-Surface Synthesis of Graphene Nanoribbons on Two-Dimensional Rare Earth-Gold Intermetallic Compounds

Cited by in corpus (8)

• One-dimensional magnetic conduction channels across zigzag graphene nanoribbon/hexagonal boron nitride heterojunctions
• Signatures of magnetism in zigzag graphene nanoribbon embedded in h-BN lattice
• Lévy flight for electrons in graphene in the presence of regions with enhanced spin-orbit coupling
• Systematic Modulation of Charge and Spin in Graphene Nanoribbons on MgO
• Tuning magnetism in graphene nanoribbons via strain and adatoms
• Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet
• Magnetic and electronic properties of 1D hybrid nanoobjects composed of alternating polycyclic hydrocarbon regions and double carbon chains
• Electron beam splitting effect with crossed zigzag graphene nanoribbons in high-spin metallic states