  Artificial spin ice (ASI) represents a class of uniquely structured
superlattices comprising geometrically arranged interacting nanomagnets. This
arrangement facilitates the exploration of magnetic frustration phenomena and
related spin wave dynamics, contributing to the field of magnonics. In this
work, we present a compressive study of spin wave dynamics in square ASI
lattices using micromagnetic simulations, explicitly focusing on ferromagnetic
resonance (FMR) and oscillation modes. We investigate how variations in the
aspect ratio of nanomagnets dimensions influence magnetic excitations in both
saturated and remanent states. We analyze the frequency variations of FMR peaks
corresponding to edges and bulk oscillation modes in relation to both magnetic
configuration and nanomagnets dimensions. We emphasize the remanent state of
square ASI vertex configurations, particularly focusing on their characteristic
energy states (Type I, Type II, Type III, and Type IV), while detailing how
symmetries influence oscillation modes. We observe distinct FMR responses
originating from vertices, exhibiting unique characteristics for each energy
state. Our results offer a potential method of utilizing the FMR technique to
identify energy states in ASI systems.
