Publication

Rashba-like spin splitting in inversion symmetric plasmonic metasurface

2026

Abstract

Spin-dependent dispersion and Rashba effect are manifestations of spin-orbit interaction (SOI) associated with the breaking of the spatial inversion symmetry in condensed matter and in optical systems. Here, we report an extraordinary spin-split dispersion effect of leaky surface plasmons in an inversion-symmetric plasmonic crystal. Momentum domain polarization analysis identified a transverse momentum-dependent linear birefringence-linear dichroism (geometric LB-LD) effect responsible for this phenomena. It is demonstrated that evolution of strong geometrical phase gradient due to the geometric LB-LD effect mediates the spin-split dispersion in inversion symmetric plasmonic metasurface through spin (circular polarization)-dependent transverse momentum. This unconventional SOI phenomena offers a new paradigm of spin-based dispersion engineering and spin-controlled nano-optical functionalities by encompassing the forbidden class of symmetric metastructures in the realm of spin optics.

Official source

https://infoscience.epfl.ch/entities/publication/9103bc70-40c3-4139-ad92-f636e00baf43

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9103bc70-40c3-4139-ad92-f636e00baf43

About this result

Related concepts (32)

Spin–orbit interaction

In quantum physics, the spin–orbit interaction (also called spin–orbit effect or spin–orbit coupling) is a relativistic interaction of a particle's spin with its motion inside a potential. A key example of this phenomenon is the spin–orbit interaction leading to shifts in an electron's atomic energy levels, due to electromagnetic interaction between the electron's magnetic dipole, its orbital motion, and the electrostatic field of the positively charged nucleus.

Dispersion (optics)

In optics and in wave propagation in general, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency; sometimes the term chromatic dispersion is used for specificity to optics in particular. A medium having this common property may be termed a dispersive medium (plural dispersive media). Although the term is used in the field of optics to describe light and other electromagnetic waves, dispersion in the same sense can apply to any sort of wave motion such as acoustic dispersion in the case of sound and seismic waves, and in gravity waves (ocean waves).

Polarization (physics)

Polarization (also polarisation) is a property of transverse waves which specifies the geometrical orientation of the oscillations. In a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave. A simple example of a polarized transverse wave is vibrations traveling along a taut string (see image); for example, in a musical instrument like a guitar string. Depending on how the string is plucked, the vibrations can be in a vertical direction, horizontal direction, or at any angle perpendicular to the string.

Related publications (19)

Rashba-like spin splitting in inversion symmetric plasmonic metasurface

Chat with Graph Search

Recent progress in high-field liquid-state Overhauser dynamic nuclear polarization

Collective mode dynamics in quantum materials probed by ultrafast electron diffraction

Spin Waves Excited by Hard X-Ray Transient Gratings