Spin-Polarization in Magneto-Optical Conductivity of Dirac Electrons

Abstract

A mechanism is proposed based on the Kubo formula to generate a spin-polarized magneto-optical current of Dirac electrons in solids which have strong spin-orbit interactions such as bismuth. The ac current response functions are calculated in the isotropic Wolff model under an external magnetic field, and the selection rules for Dirac electrons are obtained. By using the circularly polarized light and tuning its frequency, one can excite electrons concentrated in the spin-polarized lowest Landau level when the chemical potential locates in the band gap, so that spin-polarization in the magneto-optical current can be achieved.

4 pages, 3 figures

References in corpus (6)

• Dissipationless Quantum Spin Current at Room Temperature
• Anomalous orbital magnetism in Dirac-electron systems: Role of pseudo-spin paramagnetism
• Anomalous Orbital Magnetism and Hall Effect of Massless Fermions in Two Dimension
• Three-Dimensional Dirac Electrons at the Fermi Energy in Cubic Inverse Perovskites: Ca_3PbO and its Family
• Angle-resolved Landau spectrum of electrons and holes in bismuth
• Interband Effects of Magnetic Field on Hall Effects for Dirac Electrons in Bismuth

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• Transport Properties and Diamagnetism of Dirac Electrons in Bismuth
• Magneto-optical conductivity of Weyl semimetals
• Type-II Dirac surface states in topological crystalline insulators
• Dynamics of electric transport in interacting Weyl semimetals
• Spin-Hall Effect and Diamagnetism of Dirac Electrons
• Magneto-optical conductivity in the type-I and type-II phases of Weyl/multi-Weyl semimetals
• Landau Level Spectroscopy of Dirac Electrons in a Polar Semiconductor with Giant Rashba Spin Splitting
• Spin-Hall Effect and Diamagnetism of Anisotropic Dirac Electrons in Solids
• Computational search for Dirac and Weyl nodes in $f$-electon antiperovskites
• Spin Pumping into Anisotropic Dirac Electrons