Theoretical study on magnetocaloric effect and its electric-field regulation in CrI_(3)/metal heterostructure

作     者：Weiwei He Ziming Tang Qihua Gong Min Yi Wanlin Guo 

作者机构：State Key Laboratory of Mechanics and Control for Aerospace StructuresKey Laboratory for Intelligent Nano Materials and Devices of Ministry of EducationInstitute for Frontier ScienceNanjing University of Aeronautics and AstronauticsNanjing 210016China MIIT Key Laboratory of Aerospace Information Materials and PhysicsCollege of PhysicsNanjing University of Aeronautics and AstronauticsNanjing 211106China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2024年第67卷第2期

页      面：134-141页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12272173,12302134,and 11902150) the Fundamental Research Funds for the Central Universities(Grant No.NS2023054) the National Overseas Youth Talents Program the Research Fund of State Key Laboratory of Mechanics and Control for Aerospace Structures(Grant Nos.MCMS-I-0419G01,and MCMS-I-0421K01) the Priority Academic Program Development of Jiangsu Higher Education Institutions the Interdisciplinary Innovation Fund for Doctoral Students of Nanjing University of Aeronautics and Astronautics(Grant No.KXKCXJJ202306) partially supported by the High Performance Computing Platform of Nanjing University of Aeronautics and Astronautics 

主　　题：magnetocaloric effect heterostructure metal substrate 

摘      要：The extraordinary properties of a heterostructure by stacking atom-thick van der Waals(vdW)magnets have been extensively ***,the magnetocaloric effect(MCE)of heterostructures that are based on monolayer magnets remains to be ***,we deliberate MCE of vd W heterostructure composed of a monolayer CrI_(3)and metal atomic layers(Ag,Hf,Au,and Pb).It is revealed that heterostructure engineering by introducing metal substrate can improve MCE of CrI_(3),particularly boosting relative cooling power to 471.72μJ m^(-2)and adiabatic temperature change to 2.1 K at 5 T for CrI_(3)/*** improved MCE is ascribed to the enhancement of magnetic moment and intralayer exchange coupling in CrI_(3)due to the CrI_(3)/metal heterointerface induced charge *** field is further found to tune MCE of CrI_(3)in heterostructures and could shift the peak temperature by around 10 K in CrI_(3)/Hf,thus manipulating the working temperature window of *** theoretical results could enrich the research on low-dimensional magnetocaloric materials.