Anomalous lattice anharmonicity and spin-lattice coupling in spin-orbit coupled halide K2IrBr6

Key Points

• This research aims to explore the relationship between lattice distortions and spin-lattice coupling in a specific halide material.
• Analyzed structural impact on magnetism
• Examined spin-orbit coupling effects
• Utilized experimental and theoretical approaches
• Demonstrated significant anomalous lattice anharmonicity
• Revealed strong coupling between spin and lattice dynamics
• Identified interplay affecting magnetic properties