CCL: Regarding selection of k-points

From: "Akhilesh Sharma" <sharmaakhil9250]-[gmail.com>
Subject: CCL: Regarding selection of k-points
Date: Tue, 27 Jun 2023 02:56:32 -0400

 Sent to CCL by: "Akhilesh  Sharma" [sharmaakhil9250__gmail.com]
 Dear All
 This is Akhilesh, a novice in the field of surface chemistry, seeking
 guidance on the usage of sets of K-points in surface optimization and
 electronic structure calculations for a reaction.
 In the given research paper, the authors sampled the surface Brillouin zone
 with a 1x3x1 uniform mesh for the surface optimization, while it is set to
 be 9x9x1 for the electronic structure calculations.
 I would like to know the criteria or basis for the selection of k-points for
 two different calculations (surface optimization and electronic structure
 calculation) ?
 Reference paper: Sci. Adv. 2020, 6, No. eaba5778.
 Any assistance in this matter would be helpful
 Thank you