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Large intrinsic anomalous Hall effect in both <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Nb</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>FeB</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Ta</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>FeB</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> with collinear antiferromagnetism
It is rarely reported that collinear antiferromagnetic (AFM) metals can exhibit the anomalous Hall effect (AHE). In this Letter, based on symmetry analysis and the first-principles electronic structure calculations, we predict that two existing collinear antiferromagnets ${\mathrm{Nb}}_{2}{\mathrm{FeB}}_{2}$ and ${\mathrm{Ta}}_{2}{\mathrm{FeB}}_{2}$, whose N\'eel temperatures are above room temperature, have a very large …