Intrinsic Spin and Orbital Hall Effects in Heavy Fermion Systems

Abstract

We study the intrinsic spin Hall effect (SHE) based on the orbitally degenerate periodic Anderson model, which is an effective model for heavy fermion systems. In the very low resistivity regime, the magnitude of the intrinsic spin Hall conductivity (SHC) is estimated as $2000\sim 3000\hslash e^{-1}{\Omega }^{-1}c{m}^{-1}$; It is about 10 times larger than that in Pt. Its sign is negative (positive) in Ce (Yb) compound systems with $f^1$ ($f^{13}$) configuration. Interestingly, the obtained expression for the SHC depends only on the density of conduction electrons, but is independent of the strength of the c-f mixing potential and the mass-enhancement factor. The origin of the huge SHE is the spin-dependent Berry phase induced by the complex f-orbital wavefunction, which we call the "orbital Aharonov-Bohm effect".

11 pages, 6 figures

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Cited by in corpus (8)

• Intrinsic Spin and Orbital Hall Effects from Orbital Texture
• Spin-Hall Torques Generated by Rare-Earth (Lanthanide) Thin Films
• Orbital angular momentum of Bloch electrons: equilibrium formulation, magneto-electric phenomena, and the orbital Hall effect
• Orbitronics in Two-dimensional Materials
• Spin Hall effect in iron-based superconductors: A Dirac-point effect
• Strong, Temperature-Dependent Spin-Orbit Torques in Heavy Fermion YbAl${}_3$
• Theory of magnetic spin and orbital Hall and Nernst effects in bulk ferromagnets
• Spin-orbit coupled periodic Anderson model: Kondo-Dirac semimetal and orbital-selective antiferromagnetic semimetal