Researchers’ better understanding of copper-oxygen bonds may lead to the development of more efficient superconductors.
-oxygen bonds, called cuprates, there must be a very specific charge distribution between the copper and the oxygen, even under pressure.
This more profound understanding of the mechanism behind superconductors is expected to bring them one step closer to their goal of developing the foundations for a theory for superconductors that would allow current to flow without resistance and without energy loss.Back in 2016, lead researcher Jürgen Haase and his team developed an experimental method based on magnetic resonance.
The group was the first in the world to identify a measurable material parameter that predicts the maximum possible transition temperature – a condition required to achieve superconductivity at room temperature. Now they have discovered that cuprates, which under pressure enhance superconductivity, follow the charge distribution predicted in 2016.
“The fact that the transition temperature of cuprates can be enhanced under pressure has puzzled researchers for 30 years. But until now we didn’t know which mechanism was responsible for this,” Haase said in a media statement. “We established the Leipzig Relation, which says that you have to take electrons away from the oxygen in these materials and give them to the copper in order to increase the transition temperature. You can do this with chemistry, but also with pressure.
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