Spin Hall effect in a Doped Mott Insulator

Abstract

The existence of conserved spin Hall currents is shown in a strongly correlated system without involving spin-orbit coupling. The spin Hall conductivity is determined by intrinsic bulk properties, which remains finite even when the charge resistivity diverges in strong magnetic fields at zero temperature. The state in the latter limit corresponds to a spin Hall insulator. Such a system is a doped Mott insulator described by the phase string theory, and spin Hall effect is predicted to coexist with the Nernst effect to characterize the intrinsic properties of the low-temperature pseudogap phase. Possible applications in spintronics are also mentioned.

6 pages, 1 figure; More discussions are added

References in corpus (6)

• Dissipationless Quantum Spin Current at Room Temperature
• Spin current and polarization in impure 2D electron systems with spin-orbit coupling
• SU(2) Non-Abelian Holonomy and Dissipationless Spin Current in Semiconductors
• Can Non-Equilibrium Spin Hall Accumulation be Induced in Ballistic Nanostructures?
• Absence of vertex correction for the spin Hall effect in p-type semiconductors
• Mutual-Chern-Simons effective theory of doped antiferromagnets