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Anisotropy in transport and magnetic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">K</mml:mi><mml:mrow><mml:mn>0</mml:mn><mml:mo>.</mml:mo><mml:mn>64</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>Fe<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow /><mml:mrow><mml:mn>1</mml:mn><mml:mo>.</mml:mo><mml:mn>44</mml:mn></mml:mrow></mml:msub></mml:mrow…
We report a study of the anisotropy in transport and magnetic properties of ${\mathrm{K}}_{0.64}$Fe${}_{1.44}$Se${}_{2.00}$ single crystals. The anisotropy in resistivity is up by one order of magnitude between 1.8 and 300 K. The magnetic susceptibility exhibits weak temperature dependence in the normal state with no significant anomalies with decreasing temperature. …