Anisotropic super-spin at the end of a carbon nanotube

Abstract

Interaction-induced magnetism at the ends of carbon nanotubes is studied theoretically, with a special focus on magnetic anisotropies. Spin-orbit coupling, generally weak in ordinary graphene, is strongly enhanced in nanotubes. In combination with Coulomb interactions, this enhanced spin-orbit coupling gives rise to a super-spin at the ends of carbon nanotubes with an XY anisotropy on the order of 10 mK. Furthermore, it is shown that this anisotropy can be enhanced by more than one order of magnitude via a partial suppression of the super-spin.

References in corpus (7)

• The electronic properties of graphene
• Energy Gaps in Graphene Nanoribbons
• Induced Magnetic Ordering by Proton Irradiation in Graphite
• Quantum spin-liquid emerging in two-dimensional correlated Dirac fermions
• Strength of effective Coulomb interactions in graphene and graphite
• Carbon nanotubes in electric and magnetic fields
• Exact diagonalization study of the tunable edge magnetism in graphene

Cited by in corpus (2)

• Towards a Rigorous Proof of Magnetism on the Edges of Graphene Nano-ribbons
• Strong correlations at topological insulator surfaces and the breakdown of the bulk-boundary correspondence