Probing the Néel-Type Antiferromagnetic Order and Coherent Magnon–Exciton Coupling in Van Der Waals VPS3

Caixing Liu; Zhi Li; Jiyu Hu; Hengli Duan; Chao Wang; Liang Cai; Sihua Feng; Yao Wang; Ruiqi Liu; De Hou; Caixing Liu; Ranran Zhang; Lin Zhu; Yuran Niu; Alexei A. Zakharov; Zhigao Sheng; Wensheng Yan

doi:10.1002/adma.202300247

Probing the Néel-Type Antiferromagnetic Order and Coherent Magnon–Exciton Coupling in Van Der Waals VPS₃

Caixing Liu, Zhi Li, Jiyu Hu, Hengli Duan^*, Chao Wang, Liang Cai, Sihua Feng, Yao Wang, Ruiqi Liu, De Hou, Caixing Liu, Ranran Zhang, Lin Zhu, Yuran Niu, Alexei A. Zakharov, Zhigao Sheng^*, Wensheng Yan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

2D van der Waals (vdW) antiferromagnets have received intensive attention due to their terahertz resonance, multilevel magnetic-order states, and ultrafast spin dynamics. However, accurately identifying their magnetic configuration still remains a challenge owing to the lack of net magnetization and insensitivity to external fields. In this work, the Néel-type antiferromagnetic (AFM) order in 2D antiferromagnet VPS₃ with the out-of-plane anisotropy, which is demonstrated by the temperature-dependent spin–phonon coupling and second-harmonic generation (SHG), is experimentally probed. This long-range AFM order even persists at the ultrathin limit. Furthermore, strong interlayer exciton–magnon coupling (EMC) upon the Néel-type AFM order is detected based on the monolayer WSe₂/VPS₃ heterostructure, which induces an enhanced excitonic state and further certifies the Néel-type AFM order of VPS₃. The discovery provides optical routes as the novel platform to study 2D antiferromagnets and promotes their potential applications in magneto-optics and opto-spintronic devices.

Original language	English (US)
Article number	2300247
Journal	Advanced Materials
Volume	35
Issue number	30
DOIs	https://doi.org/10.1002/adma.202300247
State	Published - Jul 27 2023

Bibliographical note

Funding Information:
This work was financially supported by the National Key Research and Development Program of China (2021YFA1600800), National Natural Science Foundation of China (grants no. 11975234, U2032150, 12075243, 12005227, 12105286, 121350122 and 12275271), Natural Science Foundation of Anhui Province (2208085QA14), Major Science and Technology Project of Anhui Province (202103a05020025), the Key Program of Research and Development of Hefei Science Center CAS (2021HSC‐KPRD002, 2022HSC‐KPRD003), the Users with Excellence Program of Hefei Science Center CAS (no. 2020HSC‐UE002, 2020HSC‐CIP013, 2021HSC‐UE002, 2021HSC‐UE003), Collaborative Innovation Program of Hefei Science Center CAS (2022HSC‐CIP028), the Fundamental Research Funds for the Central Universities (WK 2310000103), and partially carried out at the USTC Center for Micro and Nanoscale Research and Fabrication. The authors acknowledge MAX IV Laboratory for time on MAXPEEM Beamline under Proposal [20210784]. Research conducted at MAX IV, a Swedish national user facility, was supported by the Swedish Research council under contract 2018–07152, the Swedish Governmental Agency for Innovation Systems under contract 2018–04969, and Formas under contract 2019–02496.

Publisher Copyright:
© 2023 Wiley-VCH GmbH.

Keywords

2D antiferromagnets
exciton–magnon coupling
Néel-type AFM order
second-harmonic generation
spin–phonon coupling

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1002/adma.202300247

Cite this

@article{26c683a802464c9f94cb25bbe66716d6,

title = "Probing the N{\'e}el-Type Antiferromagnetic Order and Coherent Magnon–Exciton Coupling in Van Der Waals VPS3",

abstract = "2D van der Waals (vdW) antiferromagnets have received intensive attention due to their terahertz resonance, multilevel magnetic-order states, and ultrafast spin dynamics. However, accurately identifying their magnetic configuration still remains a challenge owing to the lack of net magnetization and insensitivity to external fields. In this work, the N{\'e}el-type antiferromagnetic (AFM) order in 2D antiferromagnet VPS3 with the out-of-plane anisotropy, which is demonstrated by the temperature-dependent spin–phonon coupling and second-harmonic generation (SHG), is experimentally probed. This long-range AFM order even persists at the ultrathin limit. Furthermore, strong interlayer exciton–magnon coupling (EMC) upon the N{\'e}el-type AFM order is detected based on the monolayer WSe2/VPS3 heterostructure, which induces an enhanced excitonic state and further certifies the N{\'e}el-type AFM order of VPS3. The discovery provides optical routes as the novel platform to study 2D antiferromagnets and promotes their potential applications in magneto-optics and opto-spintronic devices.",

keywords = "2D antiferromagnets, exciton–magnon coupling, N{\'e}el-type AFM order, second-harmonic generation, spin–phonon coupling",

author = "Caixing Liu and Zhi Li and Jiyu Hu and Hengli Duan and Chao Wang and Liang Cai and Sihua Feng and Yao Wang and Ruiqi Liu and De Hou and Caixing Liu and Ranran Zhang and Lin Zhu and Yuran Niu and Zakharov, {Alexei A.} and Zhigao Sheng and Wensheng Yan",

note = "Funding Information: This work was financially supported by the National Key Research and Development Program of China (2021YFA1600800), National Natural Science Foundation of China (grants no. 11975234, U2032150, 12075243, 12005227, 12105286, 121350122 and 12275271), Natural Science Foundation of Anhui Province (2208085QA14), Major Science and Technology Project of Anhui Province (202103a05020025), the Key Program of Research and Development of Hefei Science Center CAS (2021HSC‐KPRD002, 2022HSC‐KPRD003), the Users with Excellence Program of Hefei Science Center CAS (no. 2020HSC‐UE002, 2020HSC‐CIP013, 2021HSC‐UE002, 2021HSC‐UE003), Collaborative Innovation Program of Hefei Science Center CAS (2022HSC‐CIP028), the Fundamental Research Funds for the Central Universities (WK 2310000103), and partially carried out at the USTC Center for Micro and Nanoscale Research and Fabrication. The authors acknowledge MAX IV Laboratory for time on MAXPEEM Beamline under Proposal [20210784]. Research conducted at MAX IV, a Swedish national user facility, was supported by the Swedish Research council under contract 2018–07152, the Swedish Governmental Agency for Innovation Systems under contract 2018–04969, and Formas under contract 2019–02496. Publisher Copyright: {\textcopyright} 2023 Wiley-VCH GmbH.",

year = "2023",

month = jul,

day = "27",

doi = "10.1002/adma.202300247",

language = "English (US)",

volume = "35",

journal = "Advanced Materials",

issn = "0935-9648",

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T1 - Probing the Néel-Type Antiferromagnetic Order and Coherent Magnon–Exciton Coupling in Van Der Waals VPS3

AU - Liu, Caixing

AU - Li, Zhi

AU - Hu, Jiyu

AU - Duan, Hengli

AU - Wang, Chao

AU - Cai, Liang

AU - Feng, Sihua

AU - Wang, Yao

AU - Liu, Ruiqi

AU - Hou, De

AU - Liu, Caixing

AU - Zhang, Ranran

AU - Zhu, Lin

AU - Niu, Yuran

AU - Zakharov, Alexei A.

AU - Sheng, Zhigao

AU - Yan, Wensheng

N1 - Funding Information: This work was financially supported by the National Key Research and Development Program of China (2021YFA1600800), National Natural Science Foundation of China (grants no. 11975234, U2032150, 12075243, 12005227, 12105286, 121350122 and 12275271), Natural Science Foundation of Anhui Province (2208085QA14), Major Science and Technology Project of Anhui Province (202103a05020025), the Key Program of Research and Development of Hefei Science Center CAS (2021HSC‐KPRD002, 2022HSC‐KPRD003), the Users with Excellence Program of Hefei Science Center CAS (no. 2020HSC‐UE002, 2020HSC‐CIP013, 2021HSC‐UE002, 2021HSC‐UE003), Collaborative Innovation Program of Hefei Science Center CAS (2022HSC‐CIP028), the Fundamental Research Funds for the Central Universities (WK 2310000103), and partially carried out at the USTC Center for Micro and Nanoscale Research and Fabrication. The authors acknowledge MAX IV Laboratory for time on MAXPEEM Beamline under Proposal [20210784]. Research conducted at MAX IV, a Swedish national user facility, was supported by the Swedish Research council under contract 2018–07152, the Swedish Governmental Agency for Innovation Systems under contract 2018–04969, and Formas under contract 2019–02496. Publisher Copyright: © 2023 Wiley-VCH GmbH.

PY - 2023/7/27

Y1 - 2023/7/27

N2 - 2D van der Waals (vdW) antiferromagnets have received intensive attention due to their terahertz resonance, multilevel magnetic-order states, and ultrafast spin dynamics. However, accurately identifying their magnetic configuration still remains a challenge owing to the lack of net magnetization and insensitivity to external fields. In this work, the Néel-type antiferromagnetic (AFM) order in 2D antiferromagnet VPS3 with the out-of-plane anisotropy, which is demonstrated by the temperature-dependent spin–phonon coupling and second-harmonic generation (SHG), is experimentally probed. This long-range AFM order even persists at the ultrathin limit. Furthermore, strong interlayer exciton–magnon coupling (EMC) upon the Néel-type AFM order is detected based on the monolayer WSe2/VPS3 heterostructure, which induces an enhanced excitonic state and further certifies the Néel-type AFM order of VPS3. The discovery provides optical routes as the novel platform to study 2D antiferromagnets and promotes their potential applications in magneto-optics and opto-spintronic devices.

AB - 2D van der Waals (vdW) antiferromagnets have received intensive attention due to their terahertz resonance, multilevel magnetic-order states, and ultrafast spin dynamics. However, accurately identifying their magnetic configuration still remains a challenge owing to the lack of net magnetization and insensitivity to external fields. In this work, the Néel-type antiferromagnetic (AFM) order in 2D antiferromagnet VPS3 with the out-of-plane anisotropy, which is demonstrated by the temperature-dependent spin–phonon coupling and second-harmonic generation (SHG), is experimentally probed. This long-range AFM order even persists at the ultrathin limit. Furthermore, strong interlayer exciton–magnon coupling (EMC) upon the Néel-type AFM order is detected based on the monolayer WSe2/VPS3 heterostructure, which induces an enhanced excitonic state and further certifies the Néel-type AFM order of VPS3. The discovery provides optical routes as the novel platform to study 2D antiferromagnets and promotes their potential applications in magneto-optics and opto-spintronic devices.

KW - 2D antiferromagnets

KW - exciton–magnon coupling

KW - Néel-type AFM order

KW - second-harmonic generation

KW - spin–phonon coupling

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U2 - 10.1002/adma.202300247

DO - 10.1002/adma.202300247

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