For electron with large kinetic energy, one needs to introduce Dirac equation for relativistic correction. In what type of systems these relativistic effects is non-negligible?

  • 2
    $\begingroup$ The answer depends on the property you want to calculate. For example, if you study spin-orbit coupling, you have to somehow deal with relativistic effects. Also note, that there are many kinds of corrections to treat relativistic effects. $\endgroup$
    – Greg
    May 3, 2020 at 7:03
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    $\begingroup$ I would be appreciated if you could recommend me some literature on the topic of spin-orbit coupling. $\endgroup$
    – Paulie Bao
    May 3, 2020 at 7:26


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