Layer-Selective Magnetization Switching in the Chirped Photonic Crystal with GdFeCo

Abstract

Here we propose a magnetophotonic structure for the layer-selective magnetization switching with ultrashort laser pulses of different wavelengths. It is based on a chirped magnetophotonic crystal (MPC) containing magnetic GdFeCo and nonmagnetic dielectric layers. At each operating wavelength the laser pulses heat up to necessary level only one GdFeCo layer that leads to its magnetization reversal without any impact on the magnetization of the other layers. Moreover, magneto-optical reading of the MPC magnetization state is discussed. Lateral dimensions of the considered MPC can be made small enough to operate as a unit cell for data storage.

arXiv comment11 pages, 4 figures, 5 tables

References in corpus (6)

• Blueprint for deterministic all-optical switching of magnetization
• TMOKE as efficient tool for the magneto-optic analysis of ultra-thin magnetic films
• Faraday-Rotation in Iron Garnet Films Beyond Elemental Substitutions
• Resonances of the magneto-optical intensity effect mediated by interaction of different modes in a hybrid magnetoplasmonic heterostructure with gold nanoparticles
• All-optical magnetization switching by two-frequency pulses using the plasmon-induced inverse Faraday effect in a magneto-plasmonic structure
• Third-order nonlinearity by the inverse Faraday effect in planar magnetoplasmonic structures