superhall

Superhall refers to a phenomenon observed in certain materials, primarily superconductors, where the Hall effect exhibits an unusually large magnitude. The Hall effect itself is the production of a voltage difference across an electrical conductor, transverse to an electric current in the conductor and a magnetic field perpendicular to the current. In typical conductors, this voltage is relatively small. However, in materials exhibiting the superhall effect, this induced voltage can be orders of magnitude larger than predicted by standard theories.

This enhanced Hall voltage is often associated with specific electronic properties of the material, such as the presence of topological electronic states or exotic quasiparticles. Materials like certain topological semimetals and magnetic superconductors have been investigated for their superhall properties. The precise mechanisms behind the superhall effect are still a subject of active research, with various theoretical models attempting to explain the large observed Hall conductivities. Understanding superhall could have implications for developing new electronic devices, sensors, and for probing fundamental physics of novel quantum materials.