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 around the nuclei of ...

Electric current is deflected by a magnetic field -- this leads to the so-called Hall effect. A surprising discovery has now been made: an exotic metal was examined and a giant Hall effect was found ...

Scientists in the United States have created a small device that produces a tiny electrical signal from Earth’s natural rotation. Although the voltage is extremely small, the experiment shows that ...