Robust Narrow-Gap Semiconducting Behavior in Square-Net La<sub>3</sub>Cd<sub>2</sub>As<sub>6</sub>
Robust Narrow-Gap Semiconducting Behavior in Square-Net La<sub>3</sub>Cd<sub>2</sub>As<sub>6</sub>
Narrow-gap semiconductors are sought-after materials due to their potential for long-wavelength detectors, thermoelectrics, and more recently nontrivial topology. Here, we report the synthesis and characterization of a new family of narrow-gap semiconductors, R3Cd2As6 (R = La and Ce). Single-crystal X-ray diffraction at room temperature reveals that the As square nets …