Study Overview

• Proposes a high-spin axion insulator (HSAI).

• Maintains lattice and time-reversal symmetry while exhibiting an enhanced axion field.

• Calculated using hybrid Wannier functions, layer-resolved Chern numbers, and topological magneto-electric effect.

  Methodology

• Confirms absence of guaranteed gapless quasi-particle excitation at boundaries.

• Shows tunability of axion field through external magnetic field.

  Results

• Identifies pathways for experimental verification using ultra-cold atoms.

  Importance

• This study advances our understanding of axion insulators in condensed matter physics. It opens new possibilities for quantum computing applications. Reliable methodologies like these pave the way for future innovations in device applications.