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505 bytes added ,  16:47, January 9, 2018
a start; in the news today
The '''quantum Hall effect''' occurs when a low-temperature electron gas in a two-dimensional plane is subjected to a strong perpendicular magnetic field. The resulting in-plane transverse conductance of the electrons is such that "the electrical conductance is quantized and can change only in discrete steps."<ref>http://physicsworld.com/cws/article/news/2018/jan/9/quantum-hall-effect-in-4d-is-created-in-the-lab</ref>
== References ==
<references/>
[[category:Physics]]
[[category:Quantum Mechanics]]
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