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The single crystals of the topological material candidate EuZnBi 2 have been grown using flux method, and the magnetic properties have been systematically investigated. Crystal structure analysis confirms that EuZnBi 2 crystallizes in a layered tetragonal structure at room temperature, consisting of alternating ZnBi 4 tetrahedral and Bi planar layers, separated by Eu atoms. The direct current (DC) magnetic susceptibility, alternating current (AC) magnetic susceptibility, and specific heat measurements indicate that a long-range antiferromagnetic order of Eu 2 + develops at T N = 20 K and the magnetic easy axis exists in the layers. It is interesting to note that EuZnBi 2 exhibits a magnetic anomaly below T N , which might be associated with the tilting of Eu moments and spin reorientation. [ABSTRACT FROM AUTHOR]

We have prepared high-quality nearly stoichiometric single crystal of Dirac semimetal SrMnSb 2 and systematically investigated the physical properties by measurements of magnetic susceptibility, heat capacity, electronic transport, and Hall effect. Magnetic and heat capacity measurements show that nearly stoichiometric SrMnSb 2 only undergoes an antiferromagnetic transition at T N = 295 K and does not have any ferromagnetic component. The analysis of de Haas-van Alphen (dHvA) effect, Shubnikov-de Haas (SdH) effect, and Hall effect reveals that nearly stoichiometric SrMnSb 2 is a semimetal with multiple Fermi surfaces and linear dispersion. Furthermore, the nonsaturating linear magnetoresistance of SrMnSb 2 can be explained by the classical disorder theoretical model very well. Thus, the nonsaturating linear magnetoresistance of SrMnSb 2 is likely caused by both of linear dispersion and the classical disorder. [ABSTRACT FROM AUTHOR]

The single crystals of the topological material candidate EuZnBi 2 have been grown using flux method, and the magnetic properties have been systematically investigated. Crystal structure analysis confirms that EuZnBi 2 crystallizes in a layered tetragonal structure at room temperature, consisting of alternating ZnBi 4 tetrahedral and Bi planar layers, separated by Eu atoms. The direct current (DC) magnetic susceptibility, alternating current (AC) magnetic susceptibility, and specific heat measurements indicate that a long-range antiferromagnetic order of Eu 2 + develops at T N = 20 K and the magnetic easy axis exists in the layers. It is interesting to note that EuZnBi 2 exhibits a magnetic anomaly below T N , which might be associated with the tilting of Eu moments and spin reorientation. [ABSTRACT FROM AUTHOR]