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4:47 PM
5
Q: Normalization of the Smooth Overlap of Atomic Positions (SOAP) Kernel

C_Swann22I am using the DScribe implementation (https://singroup.github.io/dscribe/latest/tutorials/descriptors/soap.html) of the Smooth overlap of atomic positions (SOAP) descriptor to generate it for my dataset and use it as an input for GPR(sklearn.gaussian_process with an exponentiated dot product ker...

 
 
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7:26 PM
5
Q: Do the bottom layers of the slab need to be fixed when we use DFPT or finite displacement methods to compute the phonon spectrum of a surface?

JamesWhen using DFPT or the finite displacement (also known as the frozen phonon) method to compute surface phonon spectra, it is generally necessary to perform high-precision optimization on the slab structure. My question is, when optimizing this slab structure, should the atoms in the bottom layers...

 

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