The Quest For Ideal Superconductor: Here Is Why the Betting Markets Are Not Getting Excited About LK-99 Just Yet, but You Should
04.08.2023 - 17:11
/ wccftech.com
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We are certainly living through some of the most exciting times yet in the new millennium. As if the unimaginable productivity boost from the upcoming age of AI was not enough, we are now at the cusp of an epochal technological transformation, all thanks to the much-touted room-temperature superconductor candidate, LK-99.
For the benefit of those who might not be aware, a superconductor offers virtually no electrical resistance to the passage of an electric current, thereby preventing the loss of precious energy as heat. Up till now, select materials could only exhibit superconductivity at ultra-low temperatures. However, should LK-99 manage to pass due scientific scrutiny, it will unleash a transformational wave that has not been seen since the industrial revolution. If we are able to remove electrical resistance, and that too at ambient temperature and pressure, everything from how we transmit electricity to how computers and consumer electronics are made will undergo sweeping efficiency gains along with a significant boost to the miniaturization of cutting-edge technology.
As we noted in an earlier post, a research team hailing from Korea University recently claimed that LK-99, a gray-black compound of lead, copper, phosphorus, and oxygen, formally known as copper-substituted lead phosphate apatite, exhibited superconductivity characteristics at ambient temperature and pressure.
In two key pre-print studies (here and here), the researchers claim that as copper cations substitute lead cations within the insulating structure of lead phosphate, stress-induced structural shrinkage occurs, which creates “superconducting quantum wells (SQWs)” within the structure. More importantly, the unique construct of LK-99 allows these structural distortions to perpetuate, thereby giving rise to room-temperature superconductivity characteristics.
As per the researchers’ claims, LK-99’s electrical resistivity changes with the temperature gradient, remaining at zero (with some noise) up till 60 degrees Celsius, then progressively increasing between 60 degrees Celsius and 90 degrees Celsius, showing no change with temperature between 90 degrees Celsius and 126.85 degrees Celsius, and finally undergoing Insulator-to-Metal Transition (IMT) at temperatures exceeding 126.85 degrees Celsius.
Apart from the two original studies, another paper – submitted on the 31st of July – attempted to perform density functional theory calculations on LK-99, managing to identify “correlated isolated flat bands at the Fermi level,” which are a hallmark of superconducting crystals.
As shown in the snippet