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The Magneto-Transport Properties of Cr1/3TaS2 with Chiral Magnetic Solitons
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2021-08-04 , DOI: 10.1002/aelm.202100424 Dimuthu Obeysekera 1 , Kasun Gamage 2 , Yunpeng Gao 1 , Sang‐wook Cheong 3 , Junjie Yang 1
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2021-08-04 , DOI: 10.1002/aelm.202100424 Dimuthu Obeysekera 1 , Kasun Gamage 2 , Yunpeng Gao 1 , Sang‐wook Cheong 3 , Junjie Yang 1
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Cr1/3TaS2—a candidate of chiral magnet—has been reported as a trivial ferromagnetic material. In contrast, the Cr1/3TaS2 single crystals exhibit a chiral helimagnetic (CHM) transition near 140 K. The magnetic moment versus magnetic field curves reveal a CHM—chiral soliton lattice (CSL)—forced ferromagnetic (FFM) transition in the magnetic ordered state. The conducting electrons interact with the CHM and CSL orders, giving rise to the nontrivial magnetoresistance (MR) in the Cr1/3TaS2 single crystals. The normalized magnetic moment and normalized MR fit well with the analytical functions for chiral soliton density. The magnetic phase diagrams constructed from the magnetic moment data and MR data suggest a possible tri-critical point. Compared with the isostructural Cr1/3NbS2, the CHM transition temperature of Cr1/3TaS2 is 13 K higher, the CSL—FFM transition field is about 10 times larger, and the Dzyaloshinskii-Moriya interaction strength is 3 times bigger. The latter two likely originate from the strong spin-orbit coupling (SOC) of Cr1/3TaS2. The work clarifies that high-quality Cr1/3TaS2 single crystals are chiral magnets and Cr1/3(Nb,Ta)S2 could serve as an intriguing platform for the flexible engineering of chiral magnetic solitons with tunable SOC.
中文翻译：
Cr1/3TaS2 与手性磁孤子的磁输运特性
Cr 1/3 TaS 2 - 手性磁铁的候选者 - 已被报道为一种普通的铁磁材料。相比之下，Cr 1/3 TaS 2单晶在 140 K 附近表现出手性螺旋磁 (CHM) 跃迁。磁矩与磁场曲线显示 CHM-手性孤子晶格 (CSL)-强制铁磁 (FFM) 跃迁磁性有序状态。导电电子与 CHM 和 CSL 顺序相互作用，在 Cr 1/3 TaS 2单晶中产生非平凡的磁阻 ( MR ) 。归一化磁矩和归一化MR与手性孤子密度的分析函数非常吻合。根据磁矩数据和MR数据构建的磁相图表明可能存在三临界点。与同构的Cr相比1/3 NBS 2，将Cr的CHM转变温度1/3 TAS 2是13k的越高，CSL-FFM过渡字段约大10倍，且Dzyaloshinskii-Moriya相互作用强度是大3倍. 后两者可能源自 Cr 1/3 TaS 2的强自旋轨道耦合 (SOC) 。该工作阐明了高质量的 Cr 1/3 TaS 2单晶是手性磁铁和 Cr 1/3(Nb,Ta)S 2可以作为具有可调SOC的手性磁孤子的灵活工程的有趣平台。
更新日期：2021-10-12
中文翻译：
Cr1/3TaS2 与手性磁孤子的磁输运特性
Cr 1/3 TaS 2 - 手性磁铁的候选者 - 已被报道为一种普通的铁磁材料。相比之下，Cr 1/3 TaS 2单晶在 140 K 附近表现出手性螺旋磁 (CHM) 跃迁。磁矩与磁场曲线显示 CHM-手性孤子晶格 (CSL)-强制铁磁 (FFM) 跃迁磁性有序状态。导电电子与 CHM 和 CSL 顺序相互作用，在 Cr 1/3 TaS 2单晶中产生非平凡的磁阻 ( MR ) 。归一化磁矩和归一化MR与手性孤子密度的分析函数非常吻合。根据磁矩数据和MR数据构建的磁相图表明可能存在三临界点。与同构的Cr相比1/3 NBS 2，将Cr的CHM转变温度1/3 TAS 2是13k的越高，CSL-FFM过渡字段约大10倍，且Dzyaloshinskii-Moriya相互作用强度是大3倍. 后两者可能源自 Cr 1/3 TaS 2的强自旋轨道耦合 (SOC) 。该工作阐明了高质量的 Cr 1/3 TaS 2单晶是手性磁铁和 Cr 1/3(Nb,Ta)S 2可以作为具有可调SOC的手性磁孤子的灵活工程的有趣平台。
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