Abstract
The Dirac equation for a charged spinor in an electromagnetic field is written for special cases of spherically symmetric potentials. This facilitates the introduction of relativistic extensions of shape-invariant potential classes. We obtain the relativistic spectra and spinor wavefunctions for all potentials in one of these classes. The nonrelativistic limit reproduces the usual Rosen-Mörse I and II, Eckart, Pöschl-Teller and Scarf potentials.
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