The temperature dependence of FeRh's transport properties

Abstract

The finite-temperature transport properties of FeRh compounds are investigated by first-principles Density Functional Theory-based calculations. The focus is on the behavior of the longitudinal resistivity with rising temperature, which exhibits an abrupt decrease at the metamagnetic transition point, $T=T_m$ between ferro- and antiferromagnetic phases. A detailed electronic structure investigation for $T\ge 0$ K explains this feature and demonstrates the important role of (i) the difference of the electronic structure at the Fermi level between the two magnetically ordered states and (ii) the different degree of thermally induced magnetic disorder in the vicinity of $T_m$, giving different contributions to the resistivity. To support these conclusions, we also describe the temperature dependence of the spin-orbit induced anomalous Hall resistivity and Gilbert damping parameter. For the various response quantities considered the impact of thermal lattice vibrations and spin fluctuations on their temperature dependence is investigated in detail. Comparison with corresponding experimental data finds in general a very good agreement.

References in corpus (10)

• Identification of the dominant precession damping mechanism in Fe, Co, and Ni by first-principles calculations
• Ab-initio calculation of the Gilbert damping parameter via linear response formalism
• First-principles calculation of the Gilbert damping parameter via the linear response formalism with application to magnetic transition-metals and alloys
• Calculating linear response functions for finite temperatures on the basis of the alloy analogy model
• Fluctuating local moments, itinerant electrons and the magnetocaloric effect: the compositional hypersensitivity of FeRh
• Spin orbit precession damping in transition metal ferromagnets
• Ab initio theory of galvanomagnetic phenomena in ferromagnetic metals and disordered alloys
• Finite temperature magnetism of FeRh compounds
• Spin projection and spin current density within relativistic electronic transport calculations
• Electronic, magnetic and transport properties of Fe intercalated 2H-TaS${}_2$ studied by means of the KKR-CPA method

Cited by in corpus (5)

• How to manipulate magnetic states of antiferromagnets
• Ab initio theory of the Gibbs free energy and a hierarchy of local moment correlation functions in itinerant electron systems: The magnetism of Mn${}_3$A materials class
• Local Photothermal Control of Phase Transitions for On-demand Room-temperature Rewritable Magnetic Patterning
• Damping and Anti-Damping Phenomena in Metallic Antiferromagnets: An ab-initio Study
• Temperature profile of the Thomson-effect-induced heat release/absorption in junctionless single conductors