Electrons of the valley


Electrons on the surface of bismuth crystals huddle together in “energy valleys”.


A visualisation of the elliptical orbits of surface electrons in bismuth in a strong magnetic field.
A visualisation of the elliptical orbits of surface electrons in bismuth in a strong magnetic field.
Ali Yazdani Laboratory, Princeton University

The image above shows a visualisation of the elliptical orbits of bismuth surface electrons in a large magnetic field. The orientation and interference patterns of the electronic states reveal that the electrons prefer to occupy a single valley.

These valleys could be used to store information and enhance the capacity of modern electronic devices, according to a recent study in Nature Physics.

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  1. https://www.nature.com/articles/s41567-018-0148-2
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