Electrical excitation of self-hybridized exciton polaritons in a van der Waals antiferromagnet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43933826" target="_blank" >RIV/60461373:22310/25:43933826 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.science.org/doi/10.1126/sciadv.adz6724" target="_blank" >https://www.science.org/doi/10.1126/sciadv.adz6724</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1126/sciadv.adz6724" target="_blank" >10.1126/sciadv.adz6724</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrical excitation of self-hybridized exciton polaritons in a van der Waals antiferromagnet

Popis výsledku v původním jazyce

The coupling of light with excitations in matter is one of the most important concepts to make photons interact, crucial for the development of efficient optoelectronic devices. In materials with exceptionally strong light-matter interaction, excitons can hybridize with photons without the need of an external cavity. Here, we report the electrical excitation of such self-hybridized polaritons in the van der Waals antiferromagnet CrSBr. We exploit an unconventional excitation via energy transfer from tunneling electrons in graphene tunnel junctions to strongly bound excitons in proximate CrSBr layers. This enables us to excite CrSBr crystals ranging in thickness from a bilayer up to 250 nanometers, with the strong linear polarization of the electroluminescence confirming the excitonic origin. We assign the electrically excited emission to self-hybridized exciton polaritons, highlighting the strong coupling between optical excitations and confined photon modes in CrSBr. Our findings not only offer an efficient method to generate polaritons electrically but also create opportunities for future spintronic devices.

Název v anglickém jazyce

Electrical excitation of self-hybridized exciton polaritons in a van der Waals antiferromagnet

Popis výsledku anglicky

The coupling of light with excitations in matter is one of the most important concepts to make photons interact, crucial for the development of efficient optoelectronic devices. In materials with exceptionally strong light-matter interaction, excitons can hybridize with photons without the need of an external cavity. Here, we report the electrical excitation of such self-hybridized polaritons in the van der Waals antiferromagnet CrSBr. We exploit an unconventional excitation via energy transfer from tunneling electrons in graphene tunnel junctions to strongly bound excitons in proximate CrSBr layers. This enables us to excite CrSBr crystals ranging in thickness from a bilayer up to 250 nanometers, with the strong linear polarization of the electroluminescence confirming the excitonic origin. We assign the electrically excited emission to self-hybridized exciton polaritons, highlighting the strong coupling between optical excitations and confined photon modes in CrSBr. Our findings not only offer an efficient method to generate polaritons electrically but also create opportunities for future spintronic devices.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10700 - Other natural sciences

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Science Advances

ISSN

2375-2548

e-ISSN

2375-2548

Svazek periodika

11

Číslo periodika v rámci svazku

45

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

"eadz6724"

Kód UT WoS článku

001610841100010

EID výsledku v databázi Scopus

2-s2.0-105021200726