Electrically controllable spin filtering in zigzag phosphorene nanoribbon based normal-antiferromagnet-normal junctions

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外文摘要：We investigated the electric controllable spin-filtering effect in a zigzag phosphorene nanoribbon(ZPNR)based normal-antiferromagnet-normal junction.Two ferromagnets are closely coupled to the edges of the nanoribbon and form the edge-to-edge antiferromagnetism.Under an in-plane electric field,the two degenerate edge bands of the edge-to-edge antiferromagnet split into four spin-polarized sub-bands and a 100％spin-polarized current can be easily induced with the maximal conductance 2e2/h.The spin polarization changes with the strength of the electric field and the exchange field,and changes sign at opposite electric fields.The spin-polarized current switches from one edge to the other by reversing the direction of the electric field.The edge current can also be controlled spatially by changing the electric potential of the scattering region.The manipulation of edge current is useful in spin-transfer-torque magnetic random-access memory and provides a practical way to develop controllable spintronic devices.

外文关键词：

zigzag phosphoreneelectrically controllable spin filterquantum transport

作者：

李锐岗、刘军丰、汪军

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作者单位：

Department of Physics,Guangzhou University,Guangzhou 510006,China

Department of Physics,Southeast University,Nanjing 210096,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaScience Foundation of GuangDong ProvinceGuangDong Basic and Applied Basic Research Foundation

项目编号：

12174077121740512021A15150123632022A1515110011

出版年：

2024

DOI：

10.1088/1674-1056/acf82a

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(1)

参考文献量29