Table 1: Displacement of surface atoms along the (110) direction.

O2cO3cSn5cSn6c

DFT (GGA-RPBE)0.040.16−0.100.18
DFT (GGA-PBE) [32]0.030.135−0.0920.15
DFT (GGA-PBE) [26]0.090.18−0.110.22
DFT (B3LYP) [23]0.020.14−0.120.26