Quenched random ferromagnetic/antiferromagnetic bonds create frustration and glassy dynamics on a 2D lattice.
Random bonds J_ij = ±1 create frustrated plaquettes (red highlights) where no spin arrangement satisfies all bonds. This prevents long-range order and drives spin-glass behavior — Edwards-Anderson order parameter q = ⟨⟨σᵢ⟩²⟩_disorder.