Calculated  Other theory  Expt.  
SrO  5.267  5.20  5.16 
Expt.  R. W. G Wyckoff, Crystal Structure, Wiley, New York, 1963 
Theory  A. Lichanot, Solid State Communications 116, 543 (2000) 
Calculation conditions 

Version  OpenMX2.3 
Basis set  Sr8.0s2p2d1, O5.0s2p2d1 
Pseudo potential  Sr_GGA.vps, O_GGA.vps as scalar relativistic VPS 
Functional  GGAPBE 
spinorbit coupling  None 
Spin noncollinearity  None 
Ecut  140 Ryd 
kpoints  5*5*5 