  We show that the presence of Majorana zero-modes in a one-dimensional
topological superconductor can be detected by adiabatic cooling. This cooling
effect results from an increase of the topological entropy associated with the
ground state degeneracy due to such modes. Here, we consider an experimentally
feasible topological superconductor: a strong spin-orbit coupled semiconducting
quantum wire interfaced with an s-wave superconductor and subjected to a
magnetic field. Numerical simulations of realistic experimental geometries
indicate that the creation of Majorana zero-modes, which can be achieved by
tuning of electronic gates or the external magnetic field, results in a
measurable cooling effect. We also argue that this cooling effect results in an
increase in the zero bias peak conductance.
