Quantum Weirdness in New Metals Bends the Rules of Physics

Also it’s backwards titled, since it is bending our understanding of the rules of Physics.

And I think it implies that strange metals are not Landau Fermi liquids:

>Almost 70 years ago Russian physicist Lev Landau and his collaborators introduced an incredibly successful conjecture, now known as Landau Fermi liquid theory, to try to understand electron interactions within metals.

>Physicists have discovered an entire zoo of quasiparticles in solid materials with names such as phonons, magnons, spinons, holons and plasmons.

>By thinking of the collective actions of electrons as quasiparticles, physicists have made testable predictions that have been verified time and again in experiments on metals such as gold, silver, copper and aluminum.

>In recent years physicists have found a dozen or more materials that are clearly metals, in the sense that their electrical resistivity decreases with decreasing temperature, but that are not Fermi liquids. These “strange metals” have resistivity at low temperatures that is linearly proportional to temperature—that is, their resistivity varies with the actual temperature rather than with the square of the temperature.

>Scientists have observed superconductivity emerging in multiple families of strange metals at relatively high temperatures.

The understanding of strange metals, and more broadly, systems (i.e. materials) where strong (often quantum) interactions are important is one of the main general research areas of modern physics. This is motivated partly by the interest in understanding the fundamental physics involved, and partly because these strongly-interacting systems often have other interesting properties such as high-temperature supeconductivity, or various magnetic properties that may be useful for quantum computing. It's a large and active area of research.

Also, there apparently is something called "Constantan" -- a metal compound (usually) made from 55% Copper and 45% Nickel (at least according to Wikipedia):

https://en.wikipedia.org/wiki/Constantan

>"Its main feature is the low thermal variation of

its resistivity, which is constant over a wide range of temperatures."

In other words, NOT a square relationship nor even a linear one(!) -- in the temperature range where Constantan's resistivity is constant...

(At least, according to Wikipedia...)

Exactly. Too many people still act as if everything had already been discovered, was known and fully understood.

And as a result, new findings or solutions are often ignored, instead of used for the benefit of all.

THE rules of physics are OUR approximation of how we understand the physical reality we live in. They are a human invention to describe a existing system, and thus the "our" is implied.