Correlation between thermoelectric transport properties and crystal structure in two-dimensional CrSiTe₃

The thermoelectric transport properties of artificially textured polycrystalline CrSiTe₃ samples have been investigated for elucidating their correlations with a crystal structure and the corresponding charge density distribution. We verified that the low mobility of 13–27 cm² V⁻¹ s⁻¹ attributing poor electronic transport properties is originated from the discrete charge density distribution in the covalently bonded layer. Also, the modulation of thermal conductivity values from 3.5 to 5.4 W m⁻¹ K⁻¹ with varying the texture was confirmed in pristine CrSiTe₃. Thus, we suggest that the electronic and thermal transport properties of layer structured CrSiTe₃ are strongly correlated with crystallographic features.