[Wien] pb with Au (111)

Stefaan Cottenier Stefaan.Cottenier at fys.kuleuven.be
Wed Nov 30 16:04:36 CET 2005


OK, I see. This is an old 'problem', due to the way in which nn was 
programmed: in order to decide which atoms are equivalent and which are 
not, it looks in its 'near' surroundings. Atoms in the bulk of the slab 
have a bulk near environment, and are erroneously considered to be 
equivalent. Just neglect the error messages, and do not accept 
case.struct_nn. Your case will initialize without further problems (I 
verified). If you doubt whether nn works correctly for a given 
case.struct, try sgroup as well. You will see that sgroup is perfectly 
happy with your original structfile.

For Peter: maybe one can avoid this confusion partly by changing the 
message from output as follows:

-----> DO YOU WANT TO USE THE NEW test.struct_nn file (y/n)
           (for slabs, nn might propose a wrong alternative for a 
correct case.struct.
             If your original case.struct produces no errors in sgroup, 
you can neglect these error messages by nn)

Stefaan


> Dear Stefan,
>
> I attach to this mail the struct file,  the pb is not related to 
> case.struct_sgroup .
>
> There is a vaccum between the slabs.
>
> Please can you see it, I have visualize it with xcrysden, I dont see 
> any pb.
>
> Thank's for your help
>
>
>
> Au                                                                            
>  
> H   LATTICE,NONEQUIV. ATOMS 
> 12                                                 
> MODE OF 
> CALC=RELA                                                              
>   5.449970  5.449970117.921870 90.000000 
> 90.000000120.000000                   
> ATOM  -1: X=0.66666667 Y=0.33333333 Z=0.58490566
>           MULT= 2          ISPLIT= 4
>       -1: X=0.33333333 Y=0.66666667 Z=0.41509434
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM  -2: X=0.33333333 Y=0.66666667 Z=0.62264151
>           MULT= 2          ISPLIT= 4
>    &nbs! p;  -2: X=0.66666667 Y=0.33333333 Z=0.37735849
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM  -3: X=0.00000000 Y=0.00000000 Z=0.66037736
>           MULT= 2          ISPLIT= 4
>       -3: X=0.00000000 Y=0.00000000 Z=0.33962264
> Au       &! nbsp; NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM  -4: X=0.66666667 Y=0.33333333 Z=0.69811321
>           MULT= 2          ISPLIT= 4
>       -4: X=0.33333333 Y=0.66666667 Z=0.30188679
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM  -5: X=0.33333333 Y=0.66666667 Z=0.73584906
>           MULT= 2          ISPLIT= 4
>       -5: X=0.66666667 Y=0.33333333 Z=0.26415094
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM  -6: X=0.00000000 Y=0.00000000 Z=0.77358491
>           MULT= 2          ISPLIT= 4
>       -6: X=0.00000000 Y=0.00000000 Z=0.22641509
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM  -7: X=0.66666667 Y=0.33333333 Z=0.81132075
>           MULT= 2          ISPLIT= 4
>       -7: X=0.33333333 Y=0.66666667 Z=0.18867925
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM  -8: X=0.33333333 Y=0.66666667 Z=0.84905660
>           MULT= 2          ISPLIT= 4
>       -8: X=0.66666667 Y=0.33333333 Z=0.15094340
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM  -9: X=0.00000000 Y=0.00000000 Z=0.88679245
>           MULT= 2          ISPLIT= 4
>       -9: X=0.00000000 Y=0.00000000 Z=0.11320755
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM -10: X=0.66666667 Y=0.33333333 Z=0.92452830
>           MULT= 2          ISPLIT= 4
>      -10: X=0.33333333 Y=0.66666667 Z=0.07547170
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                &n! bsp;  
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM -11: X=0.33333333 Y=0.66666667 Z=0.96226415
>           MULT= 2          ISPLIT= 4
>      -11: X=0.66666667 Y=0.33333333 Z=0.03773585
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
> ATOM -12: X=0.00000000 Y=0.00000000 Z=0.00000000
>           MULT= 1          ISPLIT= 4
> Au         NPT=  781  R0=0.00000500 RMT=    2.6000   Z: 
> 79.0                   
> LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
>                      0.0000000 1.0000000 0.0000000
>                      0.0000000 0.0000000 1.0000000
>   12      NUMBER OF SYMMETRY OPERATIONS
> -1 0 0 0.0000000
> -1 1 0 0.0000000
>  0 0-1 0.0000000
>        1
> -1 1 0 0.0000000
> -1 0 0 0.0000000
>  0 0 1 0.0000000
>        2
> -1 0 0 0.0000000
>  0-1 0 0.0000000
>  0 0-1 0.0000000
>        3
> -1 1 0 0.0000000
>  0 1 0 0.0000000
>  0 0 1 0.0000000
>        4
>  0-1 0 0.0000000
> -1 0 0 0.0000000
>  0 0 1 0.0000000
>        5
>  0 1 0 0.0000000
> -1 1 0 0.0000000
>  0 0-1 0.0000000
>        6
>  0-1 0 0.0000000
>  1-1 0 0.0000000
>  0 0 1 0.0000000!
>        7
>  0 1 0 0.0000000
>  1 0 0 0.0000000
>  0 0-1 0.0000000
>        8
>  1-1 0 0.0000000
>  0-1 0 0.0000000
>  0 0-1 0.0000000
>        9
>  1 0 0 0.0000000
>  0 1 0 0.0000000
>  0 0 1 0.0000000
>       10
>  1-1 0 0.0000000
>  1 0 0 0.0000000
>  0 0-1 0.0000000
>       11
>  1 0 0 0.0000000
>  1-1 0 0.0000000
>  0 0 1 0.0000000
>       12
>
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