Quantum Fractal Graph (IMAGE)
Caption
Theoretical calculation of the allowed energy levels of electrons in twisted bilayer graphene in a magnetic field. These allowed energy levels (black dots) form a rare example of a quantum fractal known as "Hofstadter's butterfly", which shows self-repeating features on different scales. This plot shows how the energies (vertical axis) of electrons change as a function of magnetic field (horizontal axis), and cluster into separated Hofstadter electronic bands (multi-colored shaded regions), which were visualized directly for the first time.
Credit
Yazdani group
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For editorial use only.
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Original content