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Multiphysics Modeling of Plasmon-Enhanced All-Optical Helicity-Dependent Switching
Feng Cheng1, Chuangtang Wang1, Yihao Xu2
1Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, United States.
ACS Photonics
|November 6, 2023
Summary
We developed a multiphysics simulation for all-optical helicity-dependent switching using plasmonic nanostructures. This approach models nanoscale magnetization switching, bridging nanostructure design and magnetic recording media simulation.
Area of Science:
- * Physics, Materials Science, Nanotechnology
- * Focus on advanced optical and magnetic phenomena at the nanoscale.
Background:
- * Localized surface plasmons in nanostructures generate intense electromagnetic fields.
- * These fields can influence magnetic properties of adjacent materials.
- * Understanding this interaction is key for novel data storage technologies.
Purpose of the Study:
- * To propose and validate a multiphysics simulation framework.
- * To model all-optical helicity-dependent magnetization switching.
- * To link plasmonic nanostructure design with magnetic switching behavior.
Main Methods:
- * Development of a multiphysics framework incorporating opto-magnetic and opto-thermal effects.
- * Utilizing localized surface plasmons from gold nanodisks.
- * Employing the Monte Carlo method for magnetization switching simulations.
Main Results:
- * Successful simulation of helicity-dependent magnetization switching.
- * Demonstration of strong electromagnetic field generation via plasmonic resonance.
- * Quantification of opto-magnetic and opto-thermal effects on switching.
Conclusions:
- * The proposed multiphysics approach accurately simulates nanoscale all-optical switching.
- * This work provides a bridge between plasmonic nanostructure engineering and magnetic device modeling.
- * Enables the design of efficient helicity-dependent magnetic switching technologies.
