Institute for Superconducting and Electronic Materials (ISEM) has addressed a 40-year-old quantum puzzle, unlocking a new ...

Scientists at TU Delft have unlocked a key quantum effect in graphene without using any magnetic fields, paving the way for ...

Researchers have achieved a major breakthrough by generating quantum spin currents in graphene—without relying on bulky ...

Scientists from TU Delft (The Netherlands) have observed quantum spin currents in graphene for the first time without using ...

The quantum Hall effect is observed when the resistance of a two-dimensional gas of electrons is measured in a magnetic field. In 1980 Klaus von Klitzing discovered that the resistance of the gas is ...

Collective electron excitations break down quantum Hall effect in graphene. Narrow “window” of temperatures and magnetic fields. Using measurements of resistance versus applied gate voltage at ...

Dec. 17, 2024 — The quantum Hall effect, a fundamental effect in quantum mechanics, not only generates an electric but also a magnetic current. It arises from the motion of electrons on an orbit ...

First discovered in the 1980s, quantum Hall fluids are composed of clouds of electrons floating in magnetic fields. In a classical system, the electrons would repel each other and form a crystal.

The phenomenon of the fractional quantum Hall effect (FQHE), which involves strong Coulomb interactions and correlations among electrons, leads to quasiparticles with a fractional elementary charge.

The quantum Hall effect is the basis for the international electrical resistance standard used to characterize even everyday materials that conduct electricity, such as the copper wires in a home.