Physicists
working with graphene have discovered that by twisting two sheets of
the atom-thick carbon material by an angle of 1.1º, the material is
capable of conducting electrons without resistance. This discovery could
be a significant step in the decades-long search for room-temperature
superconductors.
Although the system needed to be cooled to 1.7
degrees above absolute zero, the results as published in two Nature
papers details that electricity may be conducted through this material
much like known high-temperature superconductors.
Superconducotrs
come in two types: conventional, which are easily explained by normal
theories of superconductivity, and unconventional, such as the graphene
material recently discovered. This material has shown parallels to
another unconventional superconductors known as cuprates. These complex
copper oxides are capable of conducting electricity up to 133 degrees
above absolute zero, but unlike graphene, the material is complex and
poorly-understood.
“We can expect a frenzy of experimental activity over the next few
months to fill in the missing parts of the picture,” says Robert
Laughlin, a physicist and Nobel laureate at Stanford University in California.
Read more about this fascinating discovery at: https://www.nature.com/articles/d41586-018-02773-w
Or read the two studies concerning discovery here:
https://www.nature.com/articles/nature26160
https://www.nature.com/articles/nature26154
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Wednesday, March 7, 2018
Misaligned Sheets of Graphene Could be the Next Ultra Superconductor
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