Magneto-plasmonics

Plasmons play a large role in the optical properties of metals. The rapidly advancing field of magneto-plasmonics merges concepts from plasmonics and magnetism. This fusion gives rise to novel and unexpected phenomena and functionalities for manipulating light and magnetism at the nanoscale. 

In this talk, I present a survey of phenomena and applications across various emerging technologies, showcasing the vast scientific and technological potential of this field. 

- Owing to the intertwined optical and magneto-optical properties, magnetoplasmonics provides a versatile toolkit for creating actively tunable optical ultrathin surfaces and metasurfaces. Here, I discuss recent advancements in magnetoplasmonic nanoantennas and two-dimensional magnetoplasmonic crystals. On one hand, these developments enhance our understanding and control of optics at the nanoscale. On the other hand, magnetoplasmonic nanoantennas and surfaces are paving the way for applications in a variety of cutting-edge technologies, including ultrasensitive molecular sensing and ultrathin optical devices 

- Thermoplasmonics, the use of plasmonic nanoparticles as nanoscale heat sources that can be remotely controlled by light, has emerged as a dynamic and expanding research area. It offers a unique and adaptable approach for rapidly modulating temperature and creating high temperature gradients with nanoscale spatial precision. When combined with magnetism, these capabilities enable selective heating through optical degrees of freedom, facilitating in-depth investigations of nanostructured magnetic metamaterials and opening opportunities for a new class of ultra-low energy opto-nanomagnetic logic devices suitable for in-memory computing. 

- Moreover, the ability of localized plasmons to generate intense and highly localized electromagnetic and magnetic fields heralds exciting possibilities for the optical control of magnetism.

Séminaire organisé dans le cadre du programme interdisciplinaire MAT-PULSE (Materials and Physics @ Ultimate Scale: Nanotech for a sustainable digital world)