Electrons and holes gang up to act like a single particle dubbed a collexon
There’s a new clique among quantum particles in a semiconductor.
Electrons and positively charged holes in the material’s atomic lattice band together to create a tight-knit posse dubbed a collexon, researchers report July 26 in Communications Physics. This new class of quasiparticle — a quantum clan that acts like a single subatomic particle — could help researchers better understand semiconductors, which are essential to most modern electronics.
The collexon is similar to a quasiparticle known as an exciton, a pairing of an electron and a hole (SN: 5/17/14, p. 5). While these pairs go it alone in excitons, electron-hole duos in collexons join forces with the surrounding sea of electrons, Christian Nenstiel, a physicist at the Technical University of Berlin, and colleagues report.