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 ...

A material cooled near absolute zero produced an electrical signal that physics said should not exist, revealing a new kind ...

Physicists have long relied on the idea that electrons behave like tiny particles zipping through materials, even though ...

Measurement triangle: this quantum metrology triangle shows the relations between the three electrical units volt, ohm and ampere and the involved fundamental constants. Researchers at PTB are ...

Diamond detection A sensor based on NV centres has been used to measure electrical currents in the heart of a rat. (Courtesy: iStock/Gizmo) A diamond-based sensor that maps out the subtle electrical ...

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This course introduces basic concepts of the quantum theory of solids and presents the theory describing the carrier behaviors in semiconductors. The course balances fundamental physics with ...