  We report on the spin-Hall magnetoresistance (SMR) and spin Seebeck effect
(SSE) in multiferroic CoCr2O4 (CCO) spinel thin films with Pt contacts. We
observe a large enhancement of both signals below the spin-spiral (Ts = 28 K)
and the spin lock-in transitions (T_{lock_in} = 14 K). The SMR and SSE response
in the spin lock-in phase are one order of magnitude larger than those observed
at the ferrimagnetic transition temperature (Tc = 94 K), which indicates that
the interaction between spins at the Pt|CCO interface is more efficient in the
non-collinear magnetic state below Ts and T_{lock-in}. At T > Tc, magnetic
field-induced SMR and SSE signals are observed, which can be explained by a
high interface susceptibility. Our results show that the spin transport at the
Pt|CCO interface is sensitive to the magnetic phases but cannot be explained
solely by the bulk magnetization.
