High-Magnetic-Field-Induced First-Order Magnetic Transition and Tricritical Phenomenon in Antiferromagnetic Semimetal NdSb  

作　　者：Jun Zhao Azizur Rahman Wei Liu Langsheng Ling Yuyan Han Chuanying Xi Li Pi Zhe Qu Hao Gao Lei Zhang 赵俊;何安曼;刘威;凌浪生;韩玉岩;郗传英;皮雳;屈哲;高浩;张蕾(School of Mechanical and Electrical Engineering,Sanming University,Sanming 365004,China;Anhui Key Laboratory of Low-Energy Quantum Materials and Devices,High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Department of Physics,Lab of Low-dimensional Magnetism and Spintronic Devices,School of Physics,Hefei University of Technology,Hefei 230009,China;Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China;Hefei National Research Center for Physical Sciences at Microscale,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]School of Mechanical and Electrical Engineering,Sanming University,Sanming 365004,China [2]Anhui Key Laboratory of Low-Energy Quantum Materials and Devices,High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China [3]Department of Physics,Lab of Low-dimensional Magnetism and Spintronic Devices,School of Physics,Hefei University of Technology,Hefei 230009,China [4]Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China [5]Hefei National Research Center for Physical Sciences at Microscale,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Physics Letters》2025年第2期125-131,共7页中国物理快报(英文版)

基　　金：supported by the National Key R&D Program of China(Grant No.2024YFA1611103);the National Natural Science Foundation of China(Grant Nos.12374128,12374129,12074386,11974181,12204006,and 12250410238);the Fujian Natural Science Foundation Project(Grant No.2024J08082);the Foundation for the Introduction of High-Level Talents and the Scientific Research Launch Project of Sanming University(Grant No.113/KD23016P);Fujian Key Technology Innovation Projects(University Category)(Grant No.2022G02010);the Anhui Provincial Major S&T Project(Grant No.202305a12020005);the Alliance of International Science Organizations(Grant Nos.ANSO-VF-2022-03 and ANSO-VF-2023-03);supported by the Basic Research Program of the Chinese Academy of Sciences Based on Major Scientific Infrastructures(Grant No.JZHKYPT-2021-08);the High Magnetic Field Laboratory of Anhui Province under Contract No.AHHMFX-2020-02。

摘　　要：The antiferromagnetic(AFM)semimetal NdSb is well known for the interplay between its exotic magnetism and topological properties.However,its magnetism remains poorly understood.In this study,we thoroughly investigated the magnetization of NdSb single crystals with a high magnetic field(H)of up to 30T applied in various directions.We found that the AFM phase is suppressed by a magnetic field of 9.41T when H‖[100]and 11.25T when H‖[110],whereas the suppression field ranges from 9.41 to 10.67T with a hysteresis of 1.26T when H‖[111].The magnetization of H‖[100],which is an easy direction with a typical magnetic transition,was studied in detail.The AFM phase with H‖[100]was suppressed at lower temperatures,disappearing at approximately 6.25 K.The critical exponents β=0.234(3),γ=0.824(6),and δ=4.90(6)were obtained for H‖[100],and aligned with a tricritical mean-field model.Analysis of the critical behavior suggests a fieldinduced tricritical phenomenon for H‖[100].An H-T phase diagram for an NdSb single crystal was constructed for H‖[100],revealing a field-induced first-order transition and a tricritical point(TCP)at T_(tr)=6.25K and H_(tr)=9.41 T.The clarification of the multiple magnetic phases and transitions in NdSb provides crucial insights into the correlation between its magnetism and topology.

关 键 词：critical MAGNETIZATION Transition 

分 类 号：TG1[金属学及工艺—金属学]