[Pw_forum] spin orbit coupling
Samin, Adib J.
samin.2 at buckeyemail.osu.edu
Mon Jul 7 16:53:35 CEST 2014
Dear Quantum Espresso users,
I would like to carry out a calculation where I include spin-orbit coupling for Neodymium to examine its magnetic properties. It is my understanding that fully relativistic pseudopotentials are needed for such a calculation.
Unfortunately, I have not been able to find any relativistic pseudopotentials for the two atoms I am interested in (Nd, and Sm).
I am uncertain how to proceed because I know that the RS coupling scheme is commonly used for these atoms and I would expect the orbital contribution to be important for the calculation.
Finally, can spin-orbit coupling be used with LSDA? I ask this question because carrying out a spin-orbit calculation in Qunatum Espresso requires specifying noncolin=.true.
I would greatly appreciate any clarifications on this issue.
The Department of Aerospace and Mechanical Engineering
The Ohio State University
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