Under certain conditions – such as bone-brittling temperatures lower than that of deep space – superconductors can conduct electricity without resistance and resultant energy loss.
Though they vary in their chemical composition, operational temperature ranges, and magnetic properties, superconductors come in two groupings.
First, conventional and unconventional superconductors differ in how their electrons become entangled in tandems called Cooper pairs, an identity-sharing state that allows them to gracefully glide through the atomic jumble of their materials to facilitate uninterrupted electric flow.
Secondly, type I and type II superconductors respond differently to magnetic fields, with distinct types of thresholds at which they abruptly stop operating as superconductors and start acting like regular conductors.
Unconventional and type II varieties are generally considered more exotic; the Lamborghinis of their domain, pushing physical boundaries because they require bespoke engineering.
They may also be more suited as workhorses used in technologies like MRIs, much as Lamborghinis used to be tractors.
But perhaps no longer. Because, for the first time, physicists have created a type I superconductor material that can seemingly break the mathematical symmetry of time – a hallmark of unconventional, type II superconductors.
Known as time-reversal symmetry, this comprises a curious observation that most of the laws of physics work equally well whether time mathematically flows forward or backward
In a study recently published in Physical Review Letters, an international team of physicists led by the Indian Institute of Science Education and Research (IISER) Bhopal analyzed and described this material's unique electrical and quantum qualities, suggesting that it may eventually improve quantum computing designs.
The researchers synthesized single crystals of a material called ytterbium diantimonide (YbSb2) and used X-rays to determine its chemical purity and complex crystal structure – a structure common in conventional and unconventional superconductors because it allows quantum behaviors to emerge.
To read more, click here.