论文标题
Mn调节的CO9ZN9MN2单晶的异常电运输和磁性天空
Anomalous electrical transport and magnetic skyrmions in Mn-tuned Co9Zn9Mn2 single crystals
论文作者
论文摘要
\ b {eta} -mn-type coxznymnz（x + y + z = 20）合金最近引起了越来越多的关注，因为在室温和更高的室温下，新的手性磁铁具有新的手性磁铁。但是，关于该材料的运输特性的实验研究很少。在这项工作中，我们报告了\ b {eta} -mn-type co9.24Zn9.25MN1.51和CO9.02ZN9.18MN1.80单晶体的成功增长，以及对其磁性和运输特性的系统研究。在居里温度以下的小温度范围内发现了天空阶段。等温交流敏感性和DC磁化作为磁场的函数证实了天际相的存在。观察到在2 K到380 K的宽温度范围内的负线磁磁性，并归因于高场下磁有序波动的抑制。磁化和电阻率几乎都是各向同性的。大厅电阻的定量分析表明，CO9.24ZN9.25MN1.51和CO9.02ZN9.18MN1.80单晶体的异常大厅效应以内在机制为主。我们的发现有助于更深入地了解Coxznymnz（X + Y + Z = 20）合金材料的特性，并提高其在自旋设备中的应用。
\b{eta}-Mn-type CoxZnyMnz (x + y + z = 20) alloys have recently attracted increasing attention as a new class of chiral magnets with skyrmions at and above room temperature. However, experimental studies on the transport properties of this material are scarce. In this work, we report the successful growth of the \b{eta}-Mn-type Co9.24Zn9.25Mn1.51 and Co9.02Zn9.18Mn1.80 single crystals and a systematic study on their magnetic and transport properties. The skyrmion phase was found in a small temperature range just below the Curie temperature. The isothermal ac susceptibility and dc magnetization as a function of magnetic field confirm the existence of the skyrmion phase. A negative linear magnetoresistance over a wide temperature range from 2 K to 380 K is observed and attributed to the suppression of the magnetic ordering fluctuation under high fields. Both the magnetization and electrical resistivity are almost isotropic. The quantitative analysis of the Hall resistance suggests that the anomalous Hall effect of Co9.24Zn9.25Mn1.51 and Co9.02Zn9.18Mn1.80 single crystals is dominated by the intrinsic mechanism. Our findings contribute to a deeper understanding of the properties of CoxZnyMnz (x + y + z = 20) alloys material and advance their application in spintronic devices.
