DataVXAdvanced MaterialsPaper
journal article·2022-03

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

Suhan Son, Youjin Lee, Jae Ha Kim, Beom Hyun Kim, Chaebin Kim, Woongki Na, Hwiin Ju, Sudong Park, Abhishek Nag, Ke‐Jin Zhou, Young‐Woo Son, Hyeongdo Kim, Woo‐Suk Noh, Jae‐Hoon Park, Jong Seok Lee, Hyeonsik Cheong, Jae Hoon Kim, Je‐Geun Park

Advanced Materials· Volume 34· Issue 10
Publisher page
Source abstract

Abstract

Abstract 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.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: 2D Materials and Applications · Electronic and Structural Properties of Oxides · Multiferroics and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center for Quantum Materials Seoul National University Seoul 08826 Republic of Korea

Department of Physics and Astronomy Seoul National University Seoul 08826 Republic of Korea

Department of Physics Yonsei University Seoul 03722 Republic of Korea

School of Computational Sciences Korea Institute for Advanced Study Seoul 02455 Republic of Korea

Department of Physics Sogang University Seoul 04107 Republic of Korea

Department of Physics and Photon Science Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea

Department of Physics Pohang University of Science and Technology Pohang 37673 Republic of Korea

MPPHC‐CPM Max Planck POSTECH/Korea Research Initiative Pohang 37673 Republic of Korea

Diamond Light Source Harwell Campus Didcot OX11 0DE United Kingdom

XFEL Beamline Division Pohang Accelerator Laboratory Pohang 37673 Republic of Korea

References (20)

Show source-provided references
1. 10.1051/anphys/19361105023210.1051/anphys/193611050232 ↗
2. Landau L. · Phys. Z. Sowjetunion · 1933 · 4 · 675
3. 10.1016/0167-2738(86)90055-X10.1016/0167-2738(86)90055-X ↗
4. 10.1038/s41586-020-2520-510.1038/s41586-020-2520-5 ↗
5. 10.1038/s41563-021-00968-710.1038/s41563-021-00968-7 ↗
6. 10.1038/s41565-021-00873-910.1038/s41565-021-00873-9 ↗
7. 10.1038/s41467-021-27741-310.1038/s41467-021-27741-3 ↗
8. 10.1126/sciadv.abf309610.1126/sciadv.abf3096 ↗
9. 10.1038/srep2090410.1038/srep20904 ↗
10. 10.1088/2053-1583/abad0b10.1088/2053-1583/abad0b ↗
11. 10.1016/0378-4363(81)90100-510.1016/0378-4363(81)90100-5 ↗
12. 10.1103/PhysRevB.87.01442910.1103/PhysRevB.87.014429 ↗
13. 10.1021/acs.nanolett.1c0109510.1021/acs.nanolett.1c01095 ↗
14. 10.1088/0022-3719/19/36/02310.1088/0022-3719/19/36/023 ↗
15. 10.1039/C9RA10199C10.1039/C9RA10199C ↗
16. 10.1021/acsnano.0c0449910.1021/acsnano.0c04499 ↗
17. 10.1103/PhysRevB.33.425310.1103/PhysRevB.33.4253 ↗
18. 10.1016/j.ccr.2004.03.01810.1016/j.ccr.2004.03.018 ↗
19. Boča R. · 1999
20. 10.1103/RevModPhys.83.70510.1103/RevModPhys.83.705 ↗