Scientists have found that a perpendicular magnetic field makes electrically neutral quasiparticles (excitons) in semiconductors behave like electrons in the Hall effect. This discovery will help researchers to study the physics of excitons and Bose-Einstein condensates.
![](https://scx1.b-cdn.net/csz/news/tmb/2021/itmophysicis.jpg)
Source:
https://phys.org/news/2021-01-physicists-physical-effect.html