  Implementing superconductors capable of proximity-inducing a large energy-gap
in semiconductors in the presence of strong magnetic fields is a major goal
towards applications of semiconductor/superconductor hybrid materials in future
quantum information technologies. Here, we study the performance of devices
consisting of InAs nanowires in electrical contact to molybdenum-rhenium (MoRe)
superconducting alloys. The MoRe thin films exhibit transition temperatures ~10
K and critical fields exceeding 6 T. Normal/superconductor devices enabled
tunnel spectroscopy of the corresponding induced superconductivity, which was
maintained up to ~10 K, and MoRe based Josephson devices exhibit supercurrents
and multiple Andreev reflections. We determine an induced superconducting gap
lower than expected from the transition temperature, and observe gap softening
at finite magnetic field. These may be common features for hybrids based on
large gap, type-II superconductors. The results encourage further development
of MoRe-based hybrids.
