Science, Space and Technology News 2023
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Image of a moiré quasicrystal created by three overlapping sheets of atomically thin graphene. Credit: Sergio C. de la Barrera/University of TorontoThe work brings together two previously unconnected fields: quasicrystals and twistronics. The latter is the specialty of Pablo Jarillo-Herrero, the Cecil and Ida Green Professor of Physics at MIT and corresponding author of the new
A moiré system can also be tailored for different behaviors by changing the number of electrons added to the system. As a result, the field of twistronics has exploded over the last five years as researchers around the world have applied it to creating new atomically thin quantum materials. Examples from MIT alone include:, included Daniel Rodan-Legrain, a co-first author of the current work and an MIT postdoc in physics. They were led by Jarillo-Herrero.
The physicists then tuned a moiré quasicrystal to make it superconducting, or transmit current with no resistance at all below a certain low temperature. That’s important because superconducting devices could transfer current through electronic devices much more efficiently than is possible today, but the phenomenon is still not fully understood in all cases. The new moiré quasicrystal system brings a new way to study it.
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