The atomic and electronic structures of SnSe surfaces are studied by a home-built LT-STM and DFT calculations.

Clear atomic images of cleaved SnSe surfaces were observed at the filled and empty state measurements.

The atomic structures revealed the periodicity of a rectangular unit cell, and detail structures were analyzed based on DFT.

Only Sn atoms are visible on STM topographic images for both filled and empty state probing.