Voltage- and temperature-dependent rare-earth dopant contribution to the interfacial magnetic anisotropy

Abstract

The control of magnetic materials and devices by voltages without electric currents holds the promise of power-saving nano-scale devices. Here we study the temperature-dependent voltage control of the magnetic anisotropy caused by rare-earth (RE) local moments at an interface between a magnetic metal and a non-magnetic insulator, such as Co|(RE)|MgO. Based on a Stevens operator representation of crystal and applied field effects, we find large dominantly quadrupolar intrinsic and field-induced interface anisotropies at room temperature. We suggest improved functionalities of transition metal tunnel junctions by dusting their interfaces with rare earths.

References in corpus (16)

• Spin Transfer Torques
• Spin Caloritronics
• Strongly coupled magnons and cavity microwave photons
• Recent progress in voltage control of magnetism: Materials, mechanisms, and performance
• Voltage-Induced Ferromagnetic Resonance in Magnetic Tunnel Junctions
• Voltage-assisted Magnetization Switching in Ultrathin Fe80Co20 Alloy Layers
• Realization of Attractive Level Crossing via a Dissipative Mode
• Voltage control of magnetic anisotropy in epitaxial Ru/Co2FeAl/MgO heterostructures
• Giant gate-controlled proximity magnetoresistance in semiconductor-based ferromagnetic/nonmagnetic bilayers
• Bias dependence of magnetic exchange interactions: application to interlayer exchange coupling in spin valves
• Spin current generation due to mechanical rotation in the presence of impurity scattering
• Voltage control of interface rare-earth magnetic moments
• Electric-Field-Induced Spin Resonance in Antiferromagnetic Insulators: Inverse Process of the Dynamical Chiral Magnetic Effect
• General Formalism for Magnetic Anisotropy Constants
• Gate-Controlled Magnetoresistance of a Paramagnetic Insulator|Platinum Interface
• Noncollinearity effects on magnetocrystalline anisotropy for $R_2$Fe${}_{14}$B magnets

Cited by in corpus (1)

• Dzyaloshinskii-Moriya spin density by skew scattering