论文标题
通过应用电流的应用
Mechanical control of physical properties in the van der Waals ferromagnet Cr2Ge2Te6 via application of electric current
论文作者
论文摘要
CR2GE2TE6是一个范德华（Van der Wa）的Ferromagnet，在66 K处的温度为Curie温度。在这里，我们报告了使用小型DC电流，一种巨大但各向异性的磁电效应，并且在I-V特征中表现出巨大的，晶格驱动的量子切换，磁性基态的变化很快，但在I-V型单位上表现出巨大的且晶格驱动的量子切换。这些观察到的现象的核心是一种新发现的，强烈的各向异性磁弹性耦合，使晶格对电流和/或磁场的应用非常有力各向异性响应，因此CR2GE2TE6中的外来现象。磁性半导体中这种罕见的机械可调性有望使独特功能材料和设备的诱人前景。
Cr2Ge2Te6 is a van der Waals ferromagnet with a Curie temperature at 66 K. Here we report a swift change in the magnetic ground state upon application of small DC electric current, a giant yet anisotropic magnetoelectric effect, and a sharp, lattice-driven quantum switching manifested in the I-V characteristic of the bulk single-crystal Cr2Ge2Te6. At the heart of these observed phenomena is a newly uncovered, strongly anisotropic magnetoelastic coupling that enables strongly anisotropic responses of the lattice to application of electric current and/or magnetic field, thus the exotic phenomena in Cr2Ge2Te6. Such a rare mechanical tunability in the magnetic semiconductors promises tantalizing prospects for unique functional materials and devices.
