Affiliation:
1. National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 China
2. Institute of Physical Science and Information Technology Anhui University Hefei 230601 China
3. High Magnetic Field Laboratory Chinese Academy of Sciences Hefei 230031 China
4. MAX IV Laboratory Lund University Lund 22100 Sweden
Abstract
Abstract2D 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.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Natural Science Foundation of Anhui Province
Fundamental Research Funds for the Central Universities
Vetenskapsrådet
Vinnova
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
14 articles.
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