Anomalous and large topological Hall effects in β-Mn chiral compound Co6.5Ru1.5Zn8Mn4: electron electron interaction facilitated quantum interference effect

β-Mn-type chiral cubic CoxZnyMnz (x + y + z = 20) alloys present a intriguing platform for
exploring topological magnetic orderings with promising spintronic potential. This study examines the magnetotransport properties of Co6.5Ru1.5Zn8Mn4, a skyrmion-hosting β-Mn-type chiral compound. The longitudinal resistivity (ρxx) exhibits field-insensitive low-temperature minima due to quantum interference effects, driven by T1/2-dependent electron-electron interactions. We observe a substantial intrinsic anomalous Hall conductivity (AHC), unaffected by quantum interference. Additionally, a pronounced topological Hall effect is observed at the metastable skyrmionic state, persisting up to TC and achieving notable magnitudes for stoichiometric compounds. These results position the CoxZnyMnz family favourably to leverage the rich palette of emergent magnetotransport properties for spintronic applications.