On the Nature of Spin Currents

Abstract

Full expressions for finite frequency spin and charge conductivity in Rashba and Luttinger type systems are given. Whereas in the Rashba Hamiltonian the spin conductivity has the same frequency dependence as the dielectric polarizability, the Luttinger case is different. Moreover, for a generalized Rashba-type coupling the two quantities also exhibit different frequency dependencies.

4 pages, extra discussion on spin susceptibility and references added

References in corpus (5)

• Universal Intrinsic Spin-Hall Effect
• Dissipationless Quantum Spin Current at Room Temperature
• Suppression of the Persistent Spin Hall Current by Defect Scattering
• SU(2) Non-Abelian Holonomy and Dissipationless Spin Current in Semiconductors
• Spin susceptibilities, spin densities and their connection to spin-currents

Cited by in corpus (8)

• Notes on the minimal longitudinal dc conductivity of perfect bilayer graphene
• Spin Hall Effect
• Spin transverse force and intrinsic quantum transverse transport
• Relation between Zitterbewegung and the charge conductivity, Berry curvature and the Chern number of multi band systems
• On the conservation of spin currents in spin-orbit coupled systems
• Topological-Berry-phase-induced spin torque current in a two-dimensional system with generic $k$-linear spin-orbit interaction
• Spin Transport in non-inertial frame
• Maximum intrinsic spin-Hall conductivity in two-dimensional systems with k-linear spin-orbit interaction