Resonance Scattering Due to Magnon Excitation in High-Temperature Superconductors

This study investigates resonance phenomena caused by magnon excitations at low temperatures, which are important for understanding the magnetic characteristics of high-temperature superconductors (HTS) and other correlated electron systems. Magnons, being quantize spin waves, have a major influence on collective magnetic behaviour, and their interactions lead to detectable resonance effects in neutron scattering experiments. This study investigates the dispersion relations and neutron scattering intensity in reduced lattice units (𝑟.𝑙.𝑢.), focusing on the formation of resonance peaks corresponding to magnon energy levels. These peaks are demonstrate to vary with exchange interaction. Theoretical predictions, validated by experimental data, demonstrate a strong link between magnons and other quasi-particles, providing new insights into low-temperature magnetic dynamics and their implications for superconductivity and quantum materials.