Dear All, <div> </div><div>I was wondering if I was doing the right calculations using LRC-μBOP (HYB_GGA_XC_LC_BOP), and LRC-ωPBEh (HYB_GGA_XC_LRC_WPBEH) functionals in cp2k-8.2. Here are the &XC_FUNCTIONAL and &HF sections I used.</div><div> </div><div>For LRC-μBOP:</div><div>&XC</div><div>&XC_FUNCTIONAL </div><div>&HYB_GGA_XC_LC_BOP</div><div>_OMEGA 0.47</div><div>&END HYB_GGA_XC_LC_BOP</div><div>&END XC_FUNCTIONAL</div><div> </div><div>&HF</div><div>&SCREENING </div><div>EPS_SCHWARZ 1.0E-6</div><div>SCREEN_ON_INITIAL_P TRUE</div><div>&END SCREENING</div><div>&INTERACTION_POTENTIAL</div><div>POTENTIAL_TYPE LONGRANGE </div><div>OMEGA 0.47 </div><div>&END INTERACTION_POTENTIAL</div><div>FRACTION 1.0</div><div>&END HF</div><div> </div><div>&VDW_POTENTIAL</div><div>DISPERSION_FUNCTIONAL PAIR_POTENTIAL</div><div> &PAIR_POTENTIAL</div><div> TYPE DFTD3</div><div> CALCULATE_C9_TERM .TRUE.</div><div> REFERENCE_C9_TERM .TRUE.</div><div> LONG_RANGE_CORRECTION .TRUE.</div><div> VERBOSE_OUTPUT .FALSE.</div><div> REFERENCE_FUNCTIONAL BLYP</div><div> PARAMETER_FILE_NAME dftd3.dat</div><div> R_CUTOFF 9</div><div> EPS_CN 1.0E-6</div><div> &END PAIR_POTENTIAL</div><div> &END VDW_POTENTIAL</div><div> &END XC</div><div> </div><div>Question: </div><div>Are the two OMEGA parameters (i.e. _OMEGA in &HYB_GGA_XC_LC_BOP and OMEGA in &HF) independent with each other, or should be always the same as I set here? I really want to tune these long range parameters according to some references (e.g. <a href="http://doi.org/10.1021/jp5004243">doi.org/10.1021/jp5004243</a>).</div><div> </div><div>For LRC-ωPBEh where 20% HF is contained in short range:</div><div> </div><div>&XC</div><div>&XC_FUNCTIONAL </div><div>&HYB_GGA_XC_LRC_WPBEH</div><div>_OMEGA 0.47</div><div>&END HYB_GGA_XC_LRC_WPBEH</div><div>&END XC_FUNCTIONAL</div><div> </div><div>&HF</div><div>&SCREENING </div><div>EPS_SCHWARZ 1.0E-6</div><div>SCREEN_ON_INITIAL_P TRUE</div><div>&END SCREENING</div><div>&INTERACTION_POTENTIAL</div><div> POTENTIAL_TYPE MIX_CL_TRUNC </div><div> OMEGA 0.47 </div><div> SCALE_COULOMB 0.0</div><div> SCALE_LONGRANGE 1.0</div><div> CUTOFF_RADIUS 9.4</div><div>&END INTERACTION_POTENTIAL</div><div>FRACTION 1.0</div><div>&END HF</div><div> </div><div>Questions:</div><div>(1) Is such hybrid LRC functional available in the code? </div><div>(2) How can I implement the 20% HF exchange for the short range? It looks to me only LONGRANGE HF is defined here.</div><div>(3) Are the two OMEGA parameters independent with each other in &HYB_GGA_XC_LRC_WPBEH and &HF sections?</div><div> </div><div> </div><div>Thanks for advance!</div><div>Haibei</div>
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