Magnetic and electronic properties of a topological nodal line semimetal candidate: HoSbTe

Meng Yang, Yuting Qian, Dayu Yan, Yong Li, Youting Song, Zhijun Wang, Changjiang Yi, Hai L. Feng, Hongming Weng, and Youguo Shi

Phys. Rev. Materials 4, 094203 – Published 14 September 2020

Abstract

We report the experimental and theoretical studies of a magnetic topological nodal line semimetal candidate HoSbTe. Single crystals of HoSbTe are grown from Sb flux, crystallizing in a tetragonal layered structure (space group: $P 4 / n m m$ , no. 129), in which the Ho-Te bilayer is separated by the square-net Sb layer. The magnetization and specific heat present distinct anomalies at ∼4 K related to an antiferromagnetic (AFM) phase transition. Meanwhile, with applying magnetic field perpendicular and parallel to the crystallographic $c$ axis, an obvious magnetic anisotropy is observed. Electrical resistivity undergoes a bad-metal-like state below 200 K and reveals a plateau at about 8 K followed by a drop due to the AFM transition. In addition, with the first-principle calculations of band structure, we find that HoSbTe is a topological nodal line semimetal or a weak topological insulator with or without taking the spin-orbit coupling into account, providing a platform to investigate the interplay between magnetic and topological fermionic properties.

Received 16 May 2020
Accepted 17 August 2020

DOI:https://doi.org/10.1103/PhysRevMaterials.4.094203

Physics Subject Headings (PhySH)

Magnetic order Topological insulators Transport phenomena

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Meng Yang ^1,2,3,*, Yuting Qian^1,3,*, Dayu Yan^1,2,3, Yong Li^1,2,3, Youting Song¹, Zhijun Wang^1,3, Changjiang Yi ¹, Hai L. Feng ¹, Hongming Weng ^1,3,4,†, and Youguo Shi^1,2,3,‡

¹Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
²Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
³School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
⁴Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China

^*These authors contributed equally to this work.
^†hmweng@iphy.ac.cn
^‡ygshi@iphy.ac.cn

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Vol. 4, Iss. 9 — September 2020

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