  Confinement effects of Aharonov-Bohm (AB) flux and magnetic fields with
topological defect on CO diatomic molecule modeled by screened modified Kratzer
potential is investigated in this paper. The all-encompassing effects of the
fields and topological defect result in a strongly repulsive system. We
discover that the collective effect of the fields and defect is intense than
the lone and dual effect and consequently there is a substantial shift in the
bound state energy of the system. We also find that to sustain a low-energy
medium for the molecule modeled by SMKP, the topological defect and weak AB
field are required, whereas the Magnetic field can be used as a control
parameter or enhancer. The effects of the topological defect and magnetic and
AB fields on the thermal and magnetic properties of the system are duly
analyzed. We observe that the system tends to exhibit both a paramagnetic and
diamagnetic behavior for weak and intense magnetic field respectively and some
sort of saturation at large magnetic field. To further validate our findings,
we map our result to 3D and a comparison of our results with what obtains in
literature reveals an excellent agreement.
