首页|Spin transport of half-metal Mn2X3 with high Curie temperature:An ideal giant magnetoresistance device from electrical and thermal drives

Spin transport of half-metal Mn2X3 with high Curie temperature:An ideal giant magnetoresistance device from electrical and thermal drives

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Currently,magnetic storage devices are encountering the problem of achieving lightweight and high integration in mobile computing devices during the information age.As a result,there is a growing urgency for two-dimensional half-metallic materials with a high Curie temperature(TC).This study presents a theoretical investigation of the fundamental electro-magnetic properties of the monolayer hexagonal lattice ofMn2X3(X=S,Se,Te).Additionally,the potential application of Mn2X3 as magneto-resis-tive components is explored.All three of them fall into the category of ferromagnetic half-metals.In particular,the Monte Carlo simulations indi-cate that the Tc of Mn2S3 reachs 381 K,noticeably greater than room temperature.These findings present notable advantages for the application of Mn2S3 in spintronic devices.Hence,a prominent spin filtering effect is apparent when employing non-equilibrium Green's function simulations to examine the transport parameters.The resulting current magnitude is approximately 2 × 104 nA,while the peak gigantic magnetoresistance exhibits a substantial value of 8.36 × 1016％.It is noteworthy that the device demonstrates a substantial spin Seebeck effect when the tempera-ture differential between the electrodes is modified.In brief,Mn2X3 exhibits outstanding features as a high Tc half-metal,exhibiting exceptional capabilities in electrical and thermal drives spin transport.Therefore,it holds great potential for usage in spintronics applications.

half-metalsMn2X3high Curie temperatureelectrical and thermal GMR

Bin Liu、Xiaolin Zhang、Jingxian Xiong、Xiuyang Pang、Sheng Liu、Zixin Yang、Qiang Yu、Honggen Li、Sicong Zhu、Jian Wu

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Hubei Province Key Laboratory of Systems Science in Metallurgical Process,The State Key Laboratory for Refractories and Metallurgy,Collaborative Innovation Center for Advanced Steels,International Research Institute for Steel Technology,Wuhan University of Science and Technology,Wuhan 430081,China

Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education and School of Physical and Technology,Wuhan University,Wuhan 430072,China

College of Advanced Interdisciplinary Studies,Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,China

i-Lab & Key Laboratory of Nanodevices and Applications & Key Laboratory of Nanophotonic Materials and Devices,Suzhou Institute of Nano-Tech and NanoBionics,Chinese Academy of Sciences,Suzhou 215123,China

Institute of Optical Science and Technology,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China

Department of Mechanical Engineering,National University of Singapore,Singapore 117575,Singapore

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaHubei Province Key Laboratory of Systems Science in Metallurgical Process of Wuhan University of Science and TechnologyHubei Province Key Laboratory of Systems Science in Metallurgical Process of Wuhan University of Science and TechnologyScientific research project of Education Department of Hubei ProvincePostgraduate Scientific Research Innovation Project of Hunan ProvinceHigh-Performance Computing Center of Wuhan University of Science and Technology

1170429112174296Y202101Y2022082022024QL20230006

2024

10.1007/s11467-023-1367-2

物理学前沿
高等教育出版社

物理学前沿

CSTPCD
影响因子：0.816
ISSN：2095-0462
年,卷(期)：2024.19(4)
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