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Physical review. B./Physical review. B

Here, the authors report a thorough study of the evolution of structural, magnetic, and electrical properties of MnBi${}_{2\ensuremath{-}x}$Sb${}_{x}$Te${}_{4}$ single crystals. This investigation reveals an intimate correlation between the structural, magnetic, and transport properties. Partial substitution of Bi by Sb is an effective approach to tuning both the magnetism and the Fermi level, which are two key components of magnetic topological insulators. This work provides an important guide for exploring the topological properties in MnBi${}_{2}$Te${}_{4}$-based materials. The effect of doping on the magnetic properties also suggests complex competing interactions, which should be considered when tuning the magnetic properties.

Evolution of structural, magnetic, and transport properties in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>MnBi</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Sb</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>Te</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>

Evolution of structural, magnetic, and transport properties in MnBi2−xSbxTe4