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Solid-state physics

The butterfly emerges

Through carefully controlled deposition of graphene on hexagonal boron nitride, an experimental system is created with which to probe the quantum physics of electrons in two dimensions — allowing experimental access to the elusive 'Hofstadter butterfly'.

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Figure 1: Hofstadter's butterfly, showing the energy levels, E, of Bloch electrons in a magnetic field.

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Correspondence to Dieter Weiss.

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Weiss, D. The butterfly emerges. Nature Phys 9, 395–396 (2013). https://doi.org/10.1038/nphys2680

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