Exploring the Kondo Effect in strained kagome nanoribbons

Metallic kagome lattices provide a unique setting in which Dirac dispersions coexist with a perfectly flat band, producing electronic environments that amplify correlation effects alongside topological behavior. We demonstrate that uniaxial strain enables a highly selective control of Kondo screening in kagome zigzag nanoribbons. Using the single-impurity Anderson model solved with numerical renormalization group techniques, we show that strain reshapes the local hybridization and enables continuous tuning of the Kondo temperature by an order of magnitude. We also uncover a strong suppression of effective hybridization arising from orbital interference when the impurity couples symmetrically to multiple lattice sites. This interference mechanism dramatically weakens Kondo screening despite the presence of available conduction states, controlling many-body correlations through lattice symmetry and impurity environment. We also find that the Kondo temperature exhibits a pronounced spatial dependence, particularly near ribbon edges, where weakly dispersive states produce strongly enhanced screening. These results establish strained kagome nanoribbons as a versatile platform in which strain, geometry, and orbital structure combine to enable the design of impurity screening. These findings suggest a framework for controlling correlated quantum phenomena by strain-induced modification of hybridization and using strain-engineered quantum devices as local probes of correlated and possible topological electronic states.