Electrically Switchable Longitudinal Nonlinear Conductivity in Magnetic Semiconductors

作     者：Hong Jian Zhao Yuhao Fu Yurong Yang Yanchao Wang Laurent Bellaiche Yanming Ma 

作者机构：Key Laboratory of Material Simulation Methods and Software of Ministry of Education College of Physics Jilin University Changchun 130012 China Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education) College of Physics Jilin University Changchun 130012 China International Center of Future Science Jilin University Changchun 130012 China National Laboratory of Solid State Microstructures and Jiangsu Key Laboratory of Artificial Functional Materials Department of Materials Science and Engineering Nanjing University Nanjing 210093 China State Key Laboratory of Superhard Materials College of Physics Jilin University Changchun 130012 China Smart Functional Materials Center Physics Department and Institute for Nanoscience and Engineering University of Arkansas Fayetteville Arkansas 72701 USA Department of Materials Science and Engineering Tel Aviv University Ramat Aviv Tel Aviv 6997801 Israel 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2025年第134卷第4期

页      面：046801-046801页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：National Science Foundation, NSF Vannevar Bush Faculty Fellowship, (N00014-20-1-2834) U.S. Department of Defense, DOD, (DMR-1906383) U.S. Department of Defense, DOD National Natural Science Foundation of China, NSFC, (12274174, T2225013, 52090024, 12034009, 52288102) National Natural Science Foundation of China, NSFC 

主　　题：Magnetoelectric effects 

摘      要：Writing data by electric field (as opposed to electric current) offers promises for energy efficient memory devices. While this data writing scheme is enabled by the magnetoelectric effect, the narrow spectrum of room-temperature magnetoelectrics hinders the design of practical magnetoelectric memories, and the exploration of other mechanisms toward low-power memories is greatly demanding. Here, we propose a mechanism that allows the electric-field writing of data beyond the framework of magnetoelectric effect. By symmetry analysis, we show that electric field can induce longitudinal nonlinear conductivity (LNC) in a wide spectrum of magnetic materials, including ferromagnets, antiferromagnets, magnetoelectrics, and nonmagnetoelectrics. The LNC is electrically switchable by reversing the electric field, where the switched LNC is detectable by transport measurements. Our first-principles simulations combined with transport calculations further predict YFeO3 and CuFeS2 (room-temperature antiferromagnets) to showcase electrically switchable LNC. Our Letter helps enrich the research avenues in nonlinear charge transport, and offers a pathway for designing energy efficient devices based on LNC.