Prospects of Electromagnetic Energy Harvesting In a Combined Structure of Broadband Metamaterial Absorber With a Magnetic Tunnel Junction Having Tunnel Magneto-Seebeck Effect

The concept of the electromagnetic energy harvesting by thermoelectric system based on a broadband metal-insulator-metal-based metamaterial combined with a magnetic tunnel heterostructure, exhibiting the tunnel magneto-Seebeck effect, is presented. Based on finite-element calculations, the optimal design of such a broadband metamaterial with conductive TiN layer was selected to ensure maximum adsorption of radiation in a given wavelength range (solar spectrum/microwave region). The microwave heating of the magnetic tunnel heterostructure after passing the electromagnetic wave through the metamaterial and corresponding thermo-voltage response were also evaluated, indicating the possibility of using such system for an effective energy supply of low-power electronic devices.