Enhancement of spin mixing conductance by - orbital hybridization in heavy metals
arXiv:2206.09347 · doi:10.1103/PhysRevB.105.214438
Abstract
In a magnetic multilayer, the spin transfer between localized magnetization dynamics and itinerant conduction spin arises from the interaction between a normal metal and an adjacent ferromagnetic layer. The spin-mixing conductance then governs the spin-transfer torques and spin pumping at the magnetic interface. Theoretical description of spin-mixing conductance at the magnetic interface often employs a single conduction-band model. However, there is orbital hybridization between conduction electron and localized electron of the heavy transition metal, in which the single conduction-band model is insufficient to describe the - orbital hybridization. In this work, using the generalized Anderson model, we estimate the spin-mixing conductance that arises from the - orbital hybridization. We find that the orbital hybridization increases the magnitude of the spin-mixing conductance.
arXiv comment7 pages, 4 figures
References in corpus (15)
- Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
- Enhanced Gilbert Damping in Thin Ferromagnetic Films
- Wannier90 as a community code: new features and applications
- Spin pumping and magnetization dynamics in metallic multilayers
- Scaling of spin Hall angle in 3d, 4d and 5d metals from Y3Fe5O12/metal spin pumping
- Experimental test of the spin mixing interface conductivity concept
- Effective spin-mixing conductance of heavy-metal-ferromagnet interfaces
- Scaling of Dzyaloshinskii Moriya interaction at heavy metal and ferromagnetic metal interfaces
- Gilbert Damping in Magnetic Multilayers
- Spin-transfer torque in magnetic tunnel junctions: Scattering theory
- Crystal field effects on spin pumping
- Spin pumping and interlayer exchange coupling through palladium
- Effects of screened Coulomb interaction on spin transfer torque
- Adiabatic limit of RKKY range function in one dimension
- Antiferromagnetic spin pumping via hyperfine interaction