  Weyl semimetals are prominent examples of topologically protected quantum
matter. These materials are the three-dimensional counterparts of graphene and
great efforts are being devoted to achieve a thorough understanding of their
fundamental physics. In this work, we aim at contributing to this end by
discussing the effect of a single magnetic impurity in Weyl semimetals as a
first step towards considering a larger number of impurities. We find that
resonances appear in the local density of states with a Friedel-like behaviour,
oscillating as a function of distance. By studying the spin-resolved local
density of states, we can observe non-trivial and anisotropic spin textures
where the spin components perpendicular to the spin of the impurity wind around
the latter, until the spin becomes completely parallel to the impurity right at
the interface. Friedel oscillations also play a relevant role in the form of
the spin textures, forming an oscillatory pattern. We believe our results can
pave the way to further studies which consider the presence of a large number
of random magnetic impurities.
