When
cooled to specific temperatures, superconducting materials allow electricity to
flow without resistance. While studying superconductors using the Summit
supercomputer, scientists found that negative particles in the superconductors
interact strongly with the smallest units of light in the materials.
This
interaction can cause significant changes in materials’ behavior. In other
words, the exchange is the basis of understanding the working of a certain type
of copper-based superconductor.
Scientists
from the DOE/US Department of Energy determined how the interactions between
particles in the material change when they are in a crowded space with several
other interacting particles. This could better understand a unique class of
superconducting materials based on copper.
Scientists
modeled the complex interactions between electrons in material for their study.
They also modeled the interactions between electrons and phonons. These models
involved millions of particle states, with each state comprising distinct characteristics.
The
result is one of the team’s largest copper-based superconductor calculations
to date.
The
method scientists used in this study offers scientists a framework to study the
so-called “self-energy” of electrons. The results could help the team get closer
to understanding the mechanisms of a unique family of copper-based
superconductors, which would be more efficient than typical copper-based
superconductors.
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