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Twisted Physics: Magic Angle Graphene Produces Switchable Superconductivity
Last year, scientists demonstrated that twisted bilayer graphene — a material made of two atom-thin sheets of carbon with a slight twist — can exhibit alternating superconducting and insulating regions. Now, a new study in the journal Nature[$] [DOI: 10.1038/s41586-019-1695-0] [DX] by scientists from Spain, the U.S., China and Japan shows that superconductivity can be turned on or off with a small voltage change, increasing its usefulness for electronic devices.
"It's kind of a holy grail of physics to create a material that has superconductivity at room temperature," University of Texas at Austin physicist Allan MacDonald said. "So that's part of the motivation of this work: to understand high-temperature superconductivity better."
The discovery is a significant advance in an emerging field called Twistronics, whose pioneers include MacDonald and engineer Emanuel Tutuc, also from The University of Texas at Austin. It took several years of hard work by researchers around the world to turn MacDonald's original insight into materials with these strange properties, but it was worth the wait.
See also: A Physics Magic Trick: Take 2 Sheets of Carbon and Twist
Previously: Graphene on the Way to Superconductivity
Graphene (With a Twist) Is Helping Scientists Understand Superconductors
(Score: 2) by HiThere on Thursday October 31 2019, @08:41PM (1 child)
Thanks
Javascript is what you use to allow unknown third parties to run software you have no idea about on your computer.
(Score: 1) by RandomFactor on Saturday November 02 2019, @04:15PM
The Pascal is also the SI unit of pressure, similar to 'PSI', I was actually referencing it as a pressure measurement.
A little while back there was an article that discussed superconductivity which occurred at room temperature, but it turned out it was at pressure ranges found deep inside Jupiter :-P
~3000 GPa is the (start of) the pressure range estimated for the center of Jupiter.
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