Multiferroic-Enabled Magnetic-Excitons in 2D Quantum-Entangled Van der Waals Antiferromagnet NiI2

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 10 vom: 14. März, Seite e2109144
1. Verfasser:	Son, Suhan (VerfasserIn)
Weitere Verfasser:	Lee, Youjin, Kim, Jae Ha, Kim, Beom Hyun, Kim, Chaebin, Na, Woongki, Ju, Hwiin, Park, Sudong, Nag, Abhishek, Zhou, Ke-Jin, Son, Young-Woo, Kim, Hyeongdo, Noh, Woo-Suk, Park, Jae-Hoon, Lee, Jong Seok, Cheong, Hyeonsik, Kim, Jae Hoon, Park, Je-Geun
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2022
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article Zhang-Rice singlet states Zhang-Rice triplet states multiferroic van der Waals NiI2 optical absorption quantum entanglement second-harmonic generation

Beschreibung
Zusammenfassung:	© 2022 Wiley-VCH GmbH. Matter-light interaction is at the center of diverse research fields from quantum optics to condensed matter physics, opening new fields like laser physics. A magnetic exciton is one such rare example found in magnetic insulators. However, it is relatively rare to observe that external variables control matter-light interaction. Here, it is reported that the broken inversion symmetry of multiferroicity can act as an external knob enabling magnetic excitons in the van der Waals antiferromagnet NiI2 . It is further discovered that this magnetic exciton arises from a transition between Zhang-Rice-triplet and Zhang-Rice-singlet fundamentally quantum-entangled states. This quantum entanglement produces an ultrasharp optical exciton peak at 1.384 eV with a 5 meV linewidth. The work demonstrates that NiI2 is 2D magnetically ordered with an intrinsically quantum-entangled ground state
Beschreibung:	Date Revised 10.03.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202109144