Due to the large anomalous Hall effect,
magnetic Weyl semimetals
can support nonreciprocal surface plasmon polariton modes in the absence
of an external magnetic field. This implies that magnetic Weyl semimetals
can find novel application in (thermal) photonics. In this work, we
consider the near-field radiative heat transfer between two magnetic
Weyl semimetal slabs and show that the heat transfer can be controlled
with a relative rotation of the parallel slabs. Thanks to the intrinsic
nonreciprocity of the surface modes, this so-called twisting method
does not require surface structuring like periodic gratings. The twist-induced
control of heat transfer is due to the mismatch of the surface modes
from the two slabs with a relative rotation.