  The nature of the nuclear pairing condensates in heavy nuclei, specifically
neutron-proton (spin-triplet), versus identical-particle (spin-singlet) pairing
has been an active area of research for quite some time. In this work, we probe
three candidates that should display spin-triplet, spin-singlet, and mixed-spin
pairing. Using theoretical approaches such as the gradient method and symmetry
restoration techniques, we find the ground state of these nuclei in
Hartree-Fock-Bogoliubov theory and compute ground-state to ground-state
pair-transfer amplitudes to neighbouring isotopes while simultaneously
projecting to specific particle number and nuclear spin values. We identify
specific reactions for future experimental research that could shed light on
spin-triplet and mixed-spin pairing.
