Critical Charge-Activated Magnetic Amplification in Ni-Doped SiC: Evidence of a Lattice-Bound Magnetic Soliton

A fundamental breakthrough in condensed matter physics and materials science. This work reports the first-principles discovery of a novel, non-linear magnetic phenomenon in Nickel-doped Silicon Carbide (SiC) that challenges decades of conventional wisdom on impurity magnetism. We demonstrate that the magnetic response is not a simple, decaying polarization but a complex, collective excitation: a lattice-bound magnetic soliton. SCIENTIFIC BREAKTHROUGH: The central discovery is a "critical charge-activated magnetic switch." We prove that induced magnetism does not scale with proximity to the impurity. Instead, it is "switched on" only when surrounding host atoms surpass a critical charge transfer threshold of |ΔQ| ≈ 0.32e. This mechanism explains the observed, and previously unknown, spatial structure: A "Magnetic Silence Zone" near the impurity, where magnetism is actively suppressed—a direct violation of all standard models. A "Magnetic Amplification Shell" at a specific radial distance, where induced moments are dramatically enhanced. This work represents a paradigm shift from "diffusion and decay" models to a new understanding of "charge-activated, non-linear amplification." Crucially, this discovery was achieved through a purely data-driven scientific approach, where the physics was revealed directly from computational data without reliance on pre-existing analytical equations. KEY RESULTS: Direct evidence of non-linear amplification: A Ni impurity (+0.214 µB) induces moments up to 0.32 µB in the host lattice. Failure of conventional models: Standard power-law, exponential, and Gaussian decay models are shown to fail completely (R² ≈ 0 for the latter two), proving the non-trivial nature of the phenomenon. Identification of the switching mechanism: A clear threshold in charge transfer (|ΔQ|) is identified as the trigger for magnetic activation. Characterization of the magnetic soliton: The spatial and electronic properties of this new quasi-particle are described and visualized.