[CP2K-user] What is the difference if MT solver or ANALYTIC solver is used for XY peroidic boundary?

[Dragon Don]

Hi, folks!
I am trying to calculate adsorption of a charged molecule onto a XY 
peroidic slab(without Z peroidicity). but  i dont know what kind of solver 
should I use. It seems that both MT and ANALYTIC solver can work normally 
in this spin polarized calculation. Then the geo-opt, energy as well as the 
vibration analysis will be further performed for the free energy and DOS, 
etc. Unfortunately, I get stuck here because I do not know what the 
difference is between MT and peroidic standard solver, or which one is more 
reasonable in this condition and why? Will the surface dipole be canceled 
by just adopting XY peroidic boundary(XYZ length of box: 14x14x25 ),  or it 
can only be settled with a dipole correction or MT solver. Actually, I try 
not to use the MT solver, because a friend told me a biger box should be 
used here for MT solver. Also i don't know if this MT solver have some 
effect on the further DOS and band structure calculation.
Looking forward for your advice!
-Don
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