Anomalous Transition Magnetic Moments in two-dimensional Dirac Materials
arXiv:1912.02749 · doi:10.1103/PhysRevB.102.024432
Abstract
We show that the magnetic response of atomically thin materials with Dirac spectrum and spin-orbit interactions can exhibit strong dependence on electron-electron interactions. While graphene itself has a very small spin-orbit coupling, various two-dimensional (2D) compounds "beyond graphene" are good candidates to exhibit the strong interplay between spin-orbit and Coulomb interactions. Materials in this class include dichalcogenides (such as MoS and WSe), silicene, germanene, as well as 2D topological insulators described by the Kane-Mele model. We present a unified theory for their in-plane magnetic field response leading to "anomalous", i.e. electron interaction dependent transition moments. Our predictions can be potentially used to construct unique magnetic probes with high sensitivity to electron correlations.
arXiv comment9 pages, 6 figures
References in corpus (40)
- The electronic properties of graphene
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Topological Insulators
- Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
- Two Dimensional Atomic Crystals
- Quantum Spin Hall Effect in Graphene
- Topological Order and the Quantum Spin Hall Effect
- Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
- Chiral tunneling and the Klein paradox in graphene
- Two and one-dimensional honeycomb structures of silicon and germanium
- Low-energy effective Hamiltonian involving spin-orbit coupling in Silicene and Two-Dimensional Germanium and Tin
- Unconventional Integer Quantum Hall effect in graphene
- Electron-Electron Interactions in Graphene: Current Status and Perspectives
- Electrically Tunable Band Gap in Silicene
- Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
- Valley-Polarized Metals and Quantum Anomalous Hall Effect in Silicene
- Spin-orbit gap of graphene: First-principles calculations
- Quantum Spin Hall Effect and Enhanced Magnetic Response by Spin-Orbit Coupling
- Graphene: new bridge between condensed matter physics and quantum electrodynamics
- Impurity induced spin-orbit coupling in graphene
- Magnetic field driven metal-insulator phase transition in planar systems
- Long-lived nanosecond spin relaxation and spin coherence of electrons in monolayer MoS_2 and WS_2
- Spin-Orbit-Mediated Spin Relaxation in Graphene
- Electron spin relaxation in graphene: the role of the substrate
- Valley-Spin Polarization in the Magneto-Optical Response of Silicene and Other Similar 2D Crystals
- Spin-Valley Optical Selection Rule and Strong Circular Dichroism in Silicene
- Magneto-Optical Conductivity of Silicene and Other Buckled Honeycomb Lattices
- Optical Signatures of the Tunable Band Gap and Valley-Spin Coupling in Silicene
- Pseudospin-driven spin relaxation mechanism in graphene
- Quantum holography in a graphene flake with an irregular boundary
- Dynamical Polarization Function, Plasmons and Screening in Silicene and Other Buckled Honeycomb Lattices
- Defect-mediated spin relaxation and dephasing in graphene
- AC/DC Spin and Valley Hall Effects in Silicene and Germanene
- Polarization Charge Distribution in Gapped Graphene
- Topological Phase Transition and Electrically Tunable Diamagnetism in Silicene
- Anomalous Hall effect in 2D Dirac materials
- Anisotropic intrinsic spin relaxation in graphene due to flexural distortions
- Spin susceptibility of two-dimensional transition metal dichalcogenides
- Magnetic Properties of Dirac Fermions in a Buckled Honeycomb Lattice
- Large anomalous magnetic moment in three-dimensional Dirac and Weyl semimetals