首页|Large Tunneling Magnetoresistance and Perfect Spin Filtering Effect in van der Waals Cu/FeX2/h-BN/FeX2/Cu(X=Cl,Br,I)Magnetic Tunnel Junctions
Large Tunneling Magnetoresistance and Perfect Spin Filtering Effect in van der Waals Cu/FeX2/h-BN/FeX2/Cu(X=Cl,Br,I)Magnetic Tunnel Junctions
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
万方数据
The two-dimensional magnetic van der Waals heterojunctions have opened unprecedented opportunities to explore new physics due to their potential for spintronic applications.Here,combing density functional the-ory with non-equilibrium Green's function technique,we systematically investigate the spin-polarized trans-port properties of Cu/FeX2/h-BN/FeX2/Cu(X=Cl,Br,I)magnetic tunnel junctions(MTJs).It is found that the maximum tunneling magnetoresistance of Cu/FeCl2/h-BN/FeCl2/Cu,Cu/FeBr2/h-BN/FeBr2/Cu,and Cu/FeI2/h-BN/FeI2/Cu MTJs can reach 3443％,3069％,and 1676％,respectively.In the parallel state,the re-sistance area products at zero bias for Cu/FeCl2/h-BN/FeCl2/Cu,Cu/FeBr2/h-BN/FeBr2/Cu,and Cu/FeI2/h-BN/FeI2/Cu MTJs are 0.92,0.47,and 0.32Ω·μm2,respectively.More interestingly,our results indicate that Cu/FeX2/h-BN/FeX2/Cu(X=Cl,Br,I)MTJs can realize spin filtering effect,while Cu/FeCl2/h-BN/FeCl2/Cu and Cu/FeI2/h-BN/FeI2/Cu MTJs exhibit negative differential resistance.Our results demonstrate that large tunneling magnetoresistance,negative differential resistance effect,low resistance area product as well as excellent spin filtering effect coexist in Cu/FeCl2/h-BN/FeCl2/Cu and Cu/FeI2/h-BN/FeI2/Cu MTJs,and that the feasi-ble tunability of such a kind of van der Waals magnetic tunnel junctions is beneficial to designing next-generation logic devices.
董新龙、师小文、乔丹、李泽宇、白宇浩、乔振华、许小红
展开 >
College of Physics and Information Engineering,Shanxi Normal University,Taiyuan 030031,China
Key Laboratory of Magnetic Molecules and Magnetic Information Materials of the Ministry of Education,Research Institute of Materials Science,Shanxi Normal University,Taiyuan 030031,China
International Center for Quantum Design of Functional Materials,University of Science and Technology of China,Hefei 230026,China
Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China
展开 >
National Key Research and Development Program of ChinaNatural Science Basic Research Program of ShanxiInnovation Project For Teaching Reform of Shanxi
万方数据
