Magnetic tuning of optical anisotropy in 2D materials: Insights from antiferromagnetic-TMDC interfaces  

作　　者：Miaoxia Gao Xing Xie Junying Chen Junnan Ding Fangping Ouyang Zongwen Liu Jian-Tao Wang Jun He Yanping Liu 

机构地区：[1]Institute of Quantum Physics,School of Physics,Central South University,Changsha 410083,China [2]State Key Laboratory of Precision Manufacturing for Extreme Service Performance,Central South University,Changsha 410083,China [3]School of Physics and Technology,State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources,Xinjiang University,Urumqi 830046,China [4]School of Chemical and Biomolecular Engineering,The University of Sydney,NSW 2006,Australia [5]The University of Sydney Nano Institute,The University of Sydney,NSW 2006,Australia [6]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [7]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [8]Songshan Lake Materials Laboratory,Dongguan 523808,China

出　　处：《Nano Research》2025年第2期869-877,共9页纳米研究(英文版)

基　　金：The authors gratefully acknowledge the essential support provided by the National Natural Science Foundation of China(No.52373311);Additional significant contributions are made by the High-Performance Complex Manufacturing Key State Laboratory Project at Central South University(No.ZZYJKT2020-12);the Key Project of the Natural Science Program of the Xinjiang Uygur Autonomous Region(No.2023D01D03);Special thanks are extended to the Australian Research Council for its crucial role in advancing this research(ARC Discovery Project,DP180102976);J.T.Wang also acknowledges support from the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB33000000);the National Natural Science Foundation of China(Nos.92263202 and 12374020);the National Key Research and Development Program of China(No.2020YFA0711502);This work is further supported by the Innovation Program for Quantum Science and Technology(No.2021ZD0301605).

摘　　要：Atomically thin two-dimensional(2D)magnetic materials offer unique opportunities to enhance interactions between electron spin,charge,and lattice,leading to novel physical properties at low-dimensional scales.While extensive research has explored how breaking three-fold(Cs)rotational symmetry in transition metal dichalcogenides(TMDC)can induce optical anisotropy at heterointerfaces,the role of magnetism in modulating these anisotropic optical properties remainsunderexplored.anHere,engineerwe antiferromagnet/semiconductor heterostructure by coupling isotropic MoWSe_(2) with the low-symmetric antiferromagnet NiPSs,introducing in-plane anisotropy in the MoWSe_(2) alloy.Low-temperature photoluminescence(PL)measurements reveal a pronounced linear polarization-dependent exciton emission intensity at the MoWSe_(2)/NiPS interface,with anisotropy ratios of 1.09 and 1.07 for charged and neutral excitons,respectively.Furthermore,applying an out-of-plane magnetic field results in a dramatic rotation of the exciton polarization direction by up to 90°at 9 T,significantly exceeding the previously reported maximum deflection of around 27°.This pronounced polarization rotation is not solely attributed to valley coherence,indicating a strong influence of the magnetic order in NiPS3.These findings provide new insights into the role of magnetic ordering in tuning optical anisotropy in 2D materials,paving the way for the development of advanced polarization-sensitive optoelectronic and magneto-optic devices.

关 键 词：transition metal dichalcogenides(TMDC) optical anisotropy symmetry engineering antiferromagnetic NiPS_(3) 

分 类 号：TG1[金属学及工艺—金属学]