  In this paper we investigate the interplay of the Rashba spin-orbit coupling
(RSOC) and a topological defect, such as a screw dislocation in an {\alpha}-T3
Aharonov-Bohm quantum ring and scrutinized the effect of an external transverse
magnetic field therein. Our study reveals that the energy spectrum follows a
parabolic dependence on the Burgers vector associated with the screw
dislocation. Moreover, its presence results in an effective flux, encompassing
the ramifications due to both the topological flux and that due to the external
magnetic field. Furthermore, we observe periodic oscillations in the persistent
current in both charge and spin sectors, with a period equal to one flux
quantum, which, however suffers a phase shift that is proportional to the
dislocation present in the system. Such tunable oscillations of the spin
persistent current highlights potential application of our system to be used as
spintronic devices. Additionally, we derive and analyse the thermodynamic
properties of the ring via obtaining the canonical partition function through
Euler-Maclaurin formula. In particular, we compute the thermodynamic
potentials, free energies, entropy, and heat capacity and found the latter to
yield the expected Dulong-Petit law at large temperatures.
