How does relativity affect magnetically induced currents?

Chem Commun (Camb). 2015 Sep 21;51(73):13961-3. doi: 10.1039/c5cc05732a.

Abstract

Magnetically induced probability currents in molecules are studied in relativistic theory. Spin-orbit coupling (SOC) enhances the curvature and gives rise to a previously unobserved current cusp in AuH or small bulge-like distortions in HgH2 at the proton positions. The origin of this curvature is magnetically induced spin-density arising from SOC in the relativistic description.