论文标题
NéelSkyrmion主机GAV $ _4 $ S $ _8 $在压力下
Magnetism in the Néel skyrmion host GaV$_4$S$_8$ under pressure
论文作者
论文摘要
我们呈现NéelSkyrmion-Host GAV $ _4 $ S $ _8 $的磁化和启动旋转光谱测量，在施加最多$ P = 2.29 $ GPA的静水压力下。我们的结果表明，通过降低跨界温度从循环（C）到铁电磁样状态，磁相图会随着压力而改变，以增加$ p $，以至于2.29 GPA，C状态似乎持续到最低的测量温度。借助微磁模拟，我们建议这种变化背后的驱动机制是系统的磁各向异性的降低，并建议这可能导致Skyrmion晶格的稳定性提高。
We present magnetization and muon-spin spectroscopy measurements of Néel skyrmion-host GaV$_4$S$_8$ under the application of hydrostatic pressures up to $P=2.29$ GPa. Our results suggest that the magnetic phase diagram is altered with pressure via a reduction in the crossover temperature from the cycloidal (C) to ferromagnetic-like state with increasing $P$, such that, by 2.29 GPa, the C state appears to persist down to the lowest measured temperatures. With the aid of micromagnetic simulations, we propose that the driving mechanism behind this change is a reduction in the magnetic anisotropy of the system, and suggest that this could lead to an increase in stability of the skyrmion lattice.
