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arXiv 2402.14477cond-mat.mtrl-scicond-mat.str-el
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Co8Zn8Mn4单晶中压力可调磁斯格明子相

Pressure tunable magnetic skyrmion phase in Co8Zn8Mn4 single crystals

Zhun Li, Xinrun Mi, Xinming Wang, Jian Lyu, Na Su, Aifeng Wang, Yisheng Chai, Bao Yuan, Wanju Luo, Hui Cheng, Jianxiang Gao, Hongliang Wang, Lijie Hao, Mingquan… 展开作者

Zhun Li, Xinrun Mi, Xinming Wang, Jian Lyu, Na Su, Aifeng Wang, Yisheng Chai, Bao Yuan, Wanju Luo, Hui Cheng, Jianxiang Gao, Hongliang Wang, Lijie Hao, Mingquan He, Junying Shen, Young Sun, Xin Tong

AI总结:

本文通过静水压力调控单晶Co8Zn8Mn4的磁斯格明子相,发现6 kbar压力可显著扩展其温度-磁场稳定范围,而10 kbar则使其略微收缩,揭示了应变工程在β-Mn型Co-Zn-Mn体系中定制斯格明子相的潜力。

摘要:

在磁斯格明子相中,磁矩形成涡旋状拓扑结构,这既具有基础研究意义,也具有工业应用价值。在β-Mn型Co-Zn-Mn合金中,手性磁斯格明子在室温以上出现,为研究斯格明子物理和探索自旋电子学应用提供了一个独特的体系。然而,磁斯格明子相通常被限制在狭窄且有限的温度(T)和磁场(H)范围内。在此,我们证明了静水压力可以扩展单晶Co8Zn8Mn4的T-H相图中的斯格明子相。在常压下,斯格明子的特征出现在T约302-308 K和H约50-100 Oe范围内。施加6 kbar的中等压力可将该范围扩展到T约300-310 K和H约50-150 Oe。然而,进一步将压力升高到10 kbar会导致斯格明子相略微收缩。这些发现强调了Co8Zn8Mn4中斯格明子相对外部压力的敏感性,并暗示了应变工程的潜力,特别是在β-Mn型Co-Zn-Mn薄膜中,作为定制斯格明子相的一种有前景的途径。

英文摘要:

In a magnetic skyrmion phase, magnetic moments form vortex-like topological textures which are of both fundamental and industrial interests. In $β$-Mn-type Co-Zn-Mn alloys, chrial magnetic skyrmions emerge above room temperature, providing a unique system for studying the skrymion physics and exploring spintronics applications. However, the magnetic skyrmion phase is typically confined in a narrow and limited temperature ($T$) and magnetic field ($H$) range. Here, we demonstrate that hydrostatic pressure can expand the skyrmion phase in the $T-H$ phase diagram of single-crystalline Co$_8$Zn$_8$Mn$_4$. At ambient pressure, signatures of skyrmions are seen within $T\sim302-308$ K and $H\sim50-100$ Oe. Applying a moderate pressure of 6 kbar extends this range to $T\sim300-310$ K and $H\sim50-150$ Oe. However, further escalation of pressure to 10 kbar results in a slight contraction of the skyrmion phase. These findings underscore the sensitivity of the skyrmion phase in Co$_8$Zn$_8$Mn$_4$ to external pressures, and hint at the potential of strain engineering, particularly in $β$-Mn-type Co-Zn-Mn thin films, as a promising avenue to customize the skyrmion phase.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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