Recommendable! This could be a breakthrough! On to the Holy Grail of superconductivity!
"... But superconductors aren’t the only game in town. In 2013, for the first time scientists observed a phenomenon known as the quantum anomalous Hall (QAH) effect. Just like in a superconductor, electrons under the QAH effect flow without dissipating energy, albeit via a different mechanism. ... In a recent paper ... physicists presented a new material consisting of sandwiched layers of bismuth, tellurium and manganese. The material exhibits the QAH effect up to roughly 7 degrees Celsius above absolute zero ... but it’s a giant leap forward from the 2 degrees above absolute zero previously shown for the QAH effect. ... Rather than adding impurities to a material in a scattershot way, they carefully put down alternating layers of bismuth telluride — through which the electrons flow — and a manganese compound, which provides the magnetism. In addition to producing the QAH effect at higher temperatures than ever before, the new material is a metal rather than a topological insulator. This marks the first time a metal has been used to bring about the QAH effect, meaning the phenomenon can occur in more types of materials than previously demonstrated. ..."
Here is the respective research paper:
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