论文标题
Skyrmion晶格状态和手性表面曲折的全电气检测
All-electrical detection of skyrmion lattice state and chiral surface twists
论文作者
论文摘要
我们通过测量薄的PT电极中的自旋磁磁度（SMR）来研究手性磁绝缘子Cu $ _2 $ oseo $ _3 $的高温相图。我们发现，在临界线上，SMR信号的相位和幅度有明显的变化，该临界线分隔了大量Cu $ _2 $ oseo $ _3 $的不同磁性阶段。在SMR阶段，Skyrmion晶格状态似乎是强烈的倾角。在圆锥形螺旋状态下观察到SMR振幅的强烈增强，我们通过对非共线磁体中存在的SMR的额外允许贡献来解释。我们证明，SMR可以用作磁绝缘子中手性表面曲折和天空的全电探针。
We study the high-temperature phase diagram of the chiral magnetic insulator Cu$_2$OSeO$_3$ by measuring the spin-Hall magnetoresistance (SMR) in a thin Pt electrode. We find distinct changes in the phase and amplitude of the SMR signal at critical lines separating different magnetic phases of bulk Cu$_2$OSeO$_3$. The skyrmion lattice state appears as a strong dip in the SMR phase. A strong enhancement of the SMR amplitude is observed in the conical spiral state, which we explain by an additional symmetry-allowed contribution to the SMR present in non-collinear magnets. We demonstrate that the SMR can be used as an all-electrical probe of chiral surface twists and skyrmions in magnetic insulators.
