| Back to the main page of this manual | Input reference of CP2K version 2023.1 | 
CP2K_INPUT /
               FORCE_EVAL /
               PROPERTIES /
               TDDFPT /
               XC /
               XC_FUNCTIONAL /
               GGA_K_PERDEW&GGA_K_PERDEW {Logical} | 
               |
| Activates the functional. | |
| This keyword cannot be repeated and it expects precisely one logical. | |
                     The lone keyword behaves as a switch to
                     .TRUE. | 
               |
                     Default value:
                     .FALSE. | 
               
SCALE {Real} | 
               |
| Scales this functional | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     1.00000000E+000 | 
               
_A0 {Real} | 
               |
| constant term in numerator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     1.00000000E+000 | 
               
_A1 {Real} | 
               |
| coefficient for x^2 in numerator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     1.45458339E+000 | 
               
_A2 {Real} | 
               |
| coefficient for x^4 in numerator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     4.43216173E-003 | 
               
_A3 {Real} | 
               |
| coefficient for x^6 in numerator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     0.00000000E+000 | 
               
_A4 {Real} | 
               |
| coefficient for x^8 in numerator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     0.00000000E+000 | 
               
_B0 {Real} | 
               |
| constant term in denominator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     1.00000000E+000 | 
               
_B1 {Real} | 
               |
| coefficient for x^2 in denominator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     1.45153587E+000 | 
               
_B2 {Real} | 
               |
| coefficient for x^4 in denominator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     0.00000000E+000 | 
               
_B3 {Real} | 
               |
| coefficient for x^6 in denominator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     0.00000000E+000 | 
               
_B4 {Real} | 
               |
| coefficient for x^8 in denominator | |
| This keyword cannot be repeated and it expects precisely one real. | |
                     Default value:
                     0.00000000E+000 | 
               
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