Magnetic Order and Its Interplay with Structure Phase Transition in van der Waals Ferromagnet VI_(3)  

作　　者：Yiqing Hao Yiqing Gu Yimeng Gu Erxi Feng Huibo Cao Songxue Chi Hua Wu Jun Zhao 郝一清;顾一卿;顾依萌;冯尔玺;曹慧波;池松雪;吴骅;赵俊(State Key Laboratory of Surface Physics,and Department of Physics,Fudan University,Shanghai 200433,China;Shanghai Qi Zhi Institute,Shanghai 200232,China;Neutron Scattering Division,Oak Ridge National Laboratory,Oak Ridge,Tennessee 37831,USA;Laboratory for Computational Physical Sciences(MOE),Fudan University,Shanghai 200433,China;Institute of Nanoelectronics and Quantum Computing,Fudan University,Shanghai 200433,China;Shanghai Research Center for Quantum Sciences,Shanghai 201315,China)

机构地区：[1]State Key Laboratory of Surface Physics,and Department of Physics,Fudan University,Shanghai 200433,China [2]Shanghai Qi Zhi Institute,Shanghai 200232,China [3]Neutron Scattering Division,Oak Ridge National Laboratory,Oak Ridge,Tennessee 37831,USA [4]Laboratory for Computational Physical Sciences(MOE),Fudan University,Shanghai 200433,China [5]Institute of Nanoelectronics and Quantum Computing,Fudan University,Shanghai 200433,China [6]Shanghai Research Center for Quantum Sciences,Shanghai 201315,China

出　　处：《Chinese Physics Letters》2021年第9期69-73,共5页中国物理快报（英文版）

基　　金：Supported by the Innovation Program of Shanghai Municipal Education Commission(Grant No.2017-01-07-00-07-E00018);the Shanghai Municipal Science and Technology Major Project(Grant No.2019SHZDZX01);the National Natural Science Foundation of China(Grant No.11874119);the support of U.S.DOE BES Early Career Award No.KC0402020 under Contract No.DE-AC05-00OR22725。

摘　　要：Van der Waals magnet VI_(3) demonstrates intriguing magnetic properties that render it great for use in various applications.However,its microscopic magnetic structure has not been determined yet.Here,we report neutron diffraction and susceptibility measurements in VI_(3) that revealed a ferromagnetic order with the moment direction tilted from the c-axis by ~36° at 4 K.A spin reorientation accompanied by a structure distortion within the honeycomb plane is observed,before the magnetic order completely disappears at TC=50 K.The refined magnetic moment of ~1.3μB at 4 K is much lower than the fully ordered spin moment of 2μB/V^(3+),suggesting the presence of a considerable orbital moment antiparallel to the spin moment and strong spin-orbit coupling in VI_(3).This results in strong magnetoelastic interactions that make the magnetic properties of VI_(3) easily tunable via strain and pressure.

关 键 词：TRANSITION refined RENDER 

分 类 号：O469[理学—凝聚态物理]