Resonant excitation of the spin-wave current in hybrid nanostructures

TL;DR

This paper investigates how resonant excitation influences spin-wave current in hybrid nanostructures, using a statistical operator approach to model spin transport and effective temperature approximations.

Contribution

It introduces a macroscopic model for spin-wave current driven by resonant excitation and thermal inhomogeneity in semiconductor/ferromagnetic insulator hybrids.

Findings

Resonant excitation significantly enhances spin-wave current.

Effective temperature approximation simplifies complex subsystem interactions.

Macroscopic equations accurately describe spin transport phenomena.

Abstract

Using the non-equilibrium statistical operator method (NSO), we have investigated the spin transport through the interface in a semiconductor/ferromagnetic insulator hybrid structure. We have analyzed the approximation of effective parameters, when each of the considered subsystems (conduction electrons, magnons, and phonons) is characterized by its effective temperature. We have constructed the macroscopic equations, describing the spin-wave current caused by both resonantly excited spin system of conduction electrons and by an inhomogeneous thermal field in the ferromagnetic insulator.