The motion of Abrikosov vortices
is the dominant origin of dissipation
in type II superconductors subjected to a magnetic field, which leads
to a finite electrical resistance. It is generally believed that the
increase in the magnetic field results in the aggravation of energy
dissipation through the increase in vortex density. Here, we show
a distinctive re-entrance of the dissipationless state in quasi-one-dimensional
superconducting Ta2PdS5 nanostrips. Utilizing
magnetotransport measurements, we unveil a prominent magnetoresistance
drop with the increase in the magnetic field below the superconducting
transition temperature, manifesting itself as a giant re-entrance
to the superconducting phase. Time-dependent Ginzburg–Landau
calculations show that this is originated from the suppression of
the vortex motion by the increased energy barrier on the edges. Interestingly,
both our experiments and simulations demonstrate that this giant re-entrance
of superconductivity occurs only in certain geometrical regimes because
of the finite size of the vortex.