  Spin transfer torques (STT) occur when electric currents travel through
inhomogeneously magnetized systems and are important for the motion of magnetic
textures such as domain walls. Since superconductors are easy-plane
ferromagnets in particle-hole (charge) space, it is natural to ask whether any
charge duals of STT phenomena exist therein. We find that the superconducting
analogue of the adiabatic STT vanishes in a bulk superconductor with a
momentum-independent order parameter, while the superconducting counterpart of
the nonadiabatic STT does not vanish. This nonvanishing superconducting torque
is induced by heat (rather than charge) currents and acts on the charge (rather
than spin) degree of freedom. It can become significant in the vicinity of the
superconducting transition temperature, where it generates a net quasiparticle
charge and alters the dispersion and linewidth of low-frequency collective
modes.
