Symmetry-Driven Spin-Wave Gap Modulation in Nanolayered SrRuO₃/SrTiO₃ Heterostructures: Implications for Spintronic Applications

A strong correlation between magnetic interaction and topological symmetries leads to unconventional magneto-transport behavior. Weyl fermions induce topologically protected spin-momentum locking, which is closely related spin-wave gap formation in crystals. Ferromagnetic SrRuO3, regarded as a candidate for semimetal, inherently possesses nonzero owing its anisotropy. In this paper, we propose method control the dynamics by nanolayer designing of SrRuO3/SrTiO3 superlattices. particular, six-unit-cell-thick SrRuO3 layers within superlattices undergo phase transition crystalline symmetry from orthorhombic tetragonal, thickness SrTiO3 modulated with atomic-scale precision. Consequently, anisotropy, anomalous Hall conductivity, could be systematically manipulated. Such customization anisotropy via nanoscale heterostructuring offers novel knob tailor magnon excitation energy future spintronic applications, including waveguides filters. Our approach unveils important tunable lattice degrees freedom spin non-trivial materials.