<div dir="ltr">Sir,<br> I am Vivek Pandey, a Ph.D. student. I am running wien version
WIEN2k_21.1 on a HPC cluster with operating system CentOS Linux 7
(Core). The Fortran compiler being used is GNU Fortran (GCC) 4.8.5
20150623 (Red Hat 4.8.5-44). <br> I want to study the effect of the
strength of spin-orbit coupling (SOC) on the band-touching points
(nodes) in semimetals. For this, I need to control the strength of SOC
being used in the calculations of the ground state of any material. As
per my knowledge, there is no standard procedure provided in the WIEN2k
package to carry out this task. Furthermore, one way, which I can
suggest, to carry out this task is to control the magnitude of speed of
light (c) being used in the calculations. But I don't know the file to
which I need to do this modification.<br> Thus, I am requesting you
through this mail to let me know if there is any standard procedure
already provided in the WIEN2k package. If not, then kindly guide me how
to carry this out either by the above mentioned procedure or through
any other way.<br><br>Looking for your kind response.<br><br>Yours sincerely<br>Vivek Pandey<br>Integrated Ph.D. (Physics)<br>Indian Institute Of Technology, Mandi<br>Himachal Pradesh, India.<br>Pin Code: 175005<br></div>