Doping-induced spin reorientation and magnetic phase diagram of EuMn1−xZnxSb2 (0≤x≤1)

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2023
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Xia, Yuanying
Liu, Yan
Zhang, Liyu
Wu, Xueliang
Zhang, Long
Yang, Tianran
Yang, Kunya
Zhou, Xiaoyuan
Wang, Aifeng
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Physical Review B. American Physical Society (APS). 2023, 107(18), 184415. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/physrevb.107.184415
Zusammenfassung

EuMnSb2 is an intriguing magnetic topological semimetal containing two antiferromagnetic sublattices, and the interplay of magnetism between Eu and Mn sublattices leads to rich interesting transport phenomena. Here we report a comprehensive experimental study of the magnetic properties in EuMn1−xZnxSb2 (0 ≤x≤ 1) by using structural, resistivity, magnetization, and specific heat measurements. The magnetic phase diagrams of EuMn1−xZnxSb2 along two magnetic field orientations are established based on magnetization and specific heat measurements, constituted by the antiferromagnetic ordering of Mn at high temperature, and successive magnetic transitions of Eu at low temperatures. The antiferromagnetic transition temperature of Mn is suppressed by Zn doping and cannot be detected by specific heat measurements when x> 0.3. The antiferromagnetic transition temperature of Eu exhibits a weak nonmonotonic doping dependence with a significant anisotropy in the doping range of 0 ≤x≤ 0.4. The spin orientation of Eu is gradually reoriented from the out-of-plane direction to the in-plane direction. It closely correlates with the Mn antiferromagnetic ordering, indicating a strong coupling between the Eu and Mn magnetism. Our study will be helpful for understanding the magnetic properties of compounds with two antiferromagnetic lattices and open an avenue for tuning the spin orientation through the interaction between the different magnetic lattices.

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ISO 690XIA, Yuanying, Lin WANG, Yan LIU, Liyu ZHANG, Xueliang WU, Long ZHANG, Tianran YANG, Kunya YANG, Xiaoyuan ZHOU, Aifeng WANG, 2023. Doping-induced spin reorientation and magnetic phase diagram of EuMn1−xZnxSb2 (0≤x≤1). In: Physical Review B. American Physical Society (APS). 2023, 107(18), 184415. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/physrevb.107.184415
BibTex
@article{Xia2023Dopin-67355,
  year={2023},
  doi={10.1103/physrevb.107.184415},
  title={Doping-induced spin reorientation and magnetic phase diagram of EuMn<sub>1−x</sub>Zn<sub>x</sub>Sb<sub>2</sub> (0≤x≤1)},
  number={18},
  volume={107},
  issn={2469-9950},
  journal={Physical Review B},
  author={Xia, Yuanying and Wang, Lin and Liu, Yan and Zhang, Liyu and Wu, Xueliang and Zhang, Long and Yang, Tianran and Yang, Kunya and Zhou, Xiaoyuan and Wang, Aifeng},
  note={Article Number: 184415}
}
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