In microscopic complex systems (such as solid materials) composed of many different particles, the motion of each particle is complex and is the product of various strong interactions between the particle and the surrounding particles. To make it easier to understand The behavior and characteristics of these systems, physicists have re-imagined solids, imagining that they contain particles that interact weakly in free space. These 'quasi-particles' have different types that can lead to different recognition of material properties. know.
This time, Kristen Nanstel, a scientist at the Technical University of Berlin, Germany, and colleagues replaced the atoms in the gallium nitride semiconductor crystal with germanium atoms. They maintained a high concentration of atoms while maintaining the original crystal structure. However, such atomic substitutions alter the physical properties of the crystal - increasing the concentration of free electrons in the solid.
By analyzing the absorption and emission of light by these specially treated crystals, the research team observed a phenomenon that they believe that the stability of the new quasiparticle 'Collexon' will rise as the electron density increases. This may be a standard feature of all semiconductors - as long as the same level of atomic substitution can be achieved.
If these findings can be further supported by theoretical research, the quasiparticle 'Collexon' can be considered as a common feature of semiconductor materials. Semiconductors are the foundation of modern technology, and improving our understanding of electronic structures is beneficial to theoretical research. Also beneficial for applied research.