锂吸附制备T-CrTe2单层膜的可调电子和磁性能

IF 0.7 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Integrated Ferroelectrics Pub Date : 2022-12-29 DOI:10.1080/10584587.2022.2143189

M. Luo, Q. Zhang, Y. Xu

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引用次数: 0

摘要

摘要利用第一性原理计算，研究了锂吸附T-CrTe2单层的电子和磁性能。我们证明了锂的吸附主要通过电子掺杂和晶格扩张来改变电子性质。随着吸附浓度从3.7%增加到33.3%，Cr的磁矩从2.25 μ b线性增加到2.98μB。更有趣的是，在拉伸应变下，T-CrTe2单层成为具有间接带隙的铁磁性半导体。当施加拉伸应变时，发现从金属到半金属的转变。我们的工作为从金属中寻找磁性和生产二维磁性半导体和半金属提供了一种有效的策略。

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Tunable Electronic and Magnetic Properties of T-CrTe2 Monolayer by Li Adsorption

Abstract Using first-principle calculations, we investigate the electronic and magnetic properties of Li-adsorbed T-CrTe2 monolayer. We demonstrate that Li adsorption turns the electronic properties mainly through electron doping and lattice expansion. As the adsorption concentration increases from 3.7% to 33.3%, the magnetic moment of Cr increases from 2.25 to 2.98μB linearly. More interesting, the T-CrTe2 monolayer becomes ferromagnetic semiconductors with indirect band gaps under the tensile strain. While a tensile strain is applied, a transformation from metal to half-metal has been found. Our work provides an efficient strategy to seek magnetism and produce two-dimensional magnetic semiconductors and half-metals from metals.

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来源期刊

Integrated Ferroelectrics 工程技术-工程：电子与电气

CiteScore

1.40

自引率

0.00%

发文量

179

审稿时长

3 months

期刊介绍： Integrated Ferroelectrics provides an international, interdisciplinary forum for electronic engineers and physicists as well as process and systems engineers, ceramicists, and chemists who are involved in research, design, development, manufacturing and utilization of integrated ferroelectric devices. Such devices unite ferroelectric films and semiconductor integrated circuit chips. The result is a new family of electronic devices, which combine the unique nonvolatile memory, pyroelectric, piezoelectric, photorefractive, radiation-hard, acoustic and/or dielectric properties of ferroelectric materials with the dynamic memory, logic and/or amplification properties and miniaturization and low-cost advantages of semiconductor i.c. technology.