Strange Metals and their Strange Behavior Heartsound Audio



 Strange Metals

Strange metals exhibit unusual electronic behavior that defies the traditional rules of electricity.  They are a class of materials that fall between metals and insulators. 

Initially discovered in 1986, for A Cuprate Wrench, the first challenge to the conventional understanding came when Georg Bednorz and Karl Alex Muller rocked the physics world with the discovery of high temperature superconductors~materials that perfectly carry an electric current even at relatively warmer temperatures. 

Strange metals have a number of usual physical properties that don't match the traditional definition of metals:

ELECTRICAL RESISTANCE: strange metals have a linear relationship to their electrical resistance and temperature which is different from other materials whose resistance increases with the square of temperature. 

ENERGY: Strange metals lose energy as quickly as quantum mechanics allows.

ELECTRON BEHAVIOR: Electrons in strange metals also lose their memory of past positions at the fastest possible rate allowed by quantum mechanics.

A new theory developed by researchers at Harvard and the Flatiron Institute in NYC consider two properties to explain their weirdness: quantum entanglement and non-uniform atomic arrangement.

QUANTUM ENTANGLEMENT: Electrons in strange metals can become quantum mechanically entangled with each other, binding their fates and remaining entangled even when separated by distance. This entanglement can cause electrons to act more "fluid-like" losing their individual identities and forming a dense state.... referred to as "soup".

NON-UNIFORM ATOMIC ARRANGEMENT: Strange metals have a non uniform arrangement of atoms. This irregularity can cause a larger center-of-mass momentum drop when electrons move collectively. 

Many different materials can display this strange behavior, such as cuprates, organic molecular crystals, heavy fermion metals and twisted bilayer graphene.


Hugs,

Krissy


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