Tuesday, August 15, 2023

Physicists Discover 'Demon' Particle Inside Superconductor, Could Explain How They Work

In a breakthrough that could revolutionize our understanding of superconductivity, physicists have discovered a mysterious "demon" particle inside a superconductor. The particle, called a Pines' demon, is a transparent, chargeless quasiparticle that could shed more light on the underlying mechanics of superconductivity.


Pines' demons were first predicted by Nobel Prize-winning physicist David Pines in the 1950s. They are thought to be created when electrons in a superconductor form a collective state. This state allows the electrons to move through the material without any resistance.


The researchers who discovered Pines' demons used a technique called angle-resolved photoemission spectroscopy to study a superconductor called strontium ruthenate. They found that the spectrum of the electrons in the superconductor showed a clear signature of Pines' demons.


It consists of electrons in different energy bands moving out of phase with each other, such that the peaks of one band line up with the valleys of the other. This out-of-phase motion creates a region of negative charge, which can propagate through the metal like a wave.


Pines' demons are acoustic, meaning that they do not travel at the speed of light, and they are electrically neutral. They also do not couple to light, which is why they have never been detected in an equilibrium metal.

However, they can be created in non-equilibrium metals, such as those that are being driven by a current or a temperature gradient.


The discovery of Pines' demons could help to shed light on the physics of superconductivity. Superconductors are materials that conduct electricity with no resistance. One theory of superconductivity is that it is caused by the formation of Cooper pairs, which are pairs of electrons that are bound together by a weak attractive force. Pines' demons could play a role in the formation of Cooper pairs, as they could help to transport electrons between different energy bands.


In addition to their potential role in superconductivity, Pines' demons could also have applications in other areas of physics, such as quantum computing and spintronics. Quantum computing is a new field of computing that uses quantum mechanical effects to perform calculations. Spintronics is a field of electronics that uses the spin of electrons to store and transmit information. Pines' demons could be used to create new types of quantum computers and spintronic devices.


The experimental observation of Pines' demons is a significant advance in our understanding of condensed matter physics. It opens up new possibilities for research into superconductivity, quantum computing, and spintronics. It is also a reminder that there is still much that we do not know about the fundamental nature of matter.


The discovery of Pines' demons is a major breakthrough in our understanding of superconductivity. It could help to explain how superconductors work and could lead to the development of new and improved superconducting materials.


In addition to its potential applications in superconductivity, Pines' demons could also have implications for other areas of physics. For example, they could shed light on the nature of quantum entanglement and the role of quasiparticles in condensed matter physics.


The discovery of Pines' demons is a significant step forward in our understanding of one of the most mysterious phenomena in physics. It is a reminder that even the most well-studied materials can still hold surprises.


-Unlikely Buddha 2023



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