An international team of researchers has found proof of the existence of a new and mysterious state of aggregation, such that its existence was first predicted 40 years ago, in actual matter. This state of aggregation, known as 'quantum spin liquid' causes the electrons inside it to disintegrate
[Translation by Dr. Nachmani Moshe]
An international team of researchers has found proof of the existence of a new and mysterious state of aggregation, such that its existence was first predicted 40 years ago, in actual matter. This state of aggregation, known as 'quantum spin liquid' causes the electrons inside it to disintegrate.
The team of researchers, including physicists from the University of Cambridge, was able to measure the traces of these particle fractions, known as Majora fermions in a two-dimensional material whose structure is similar to that of graphene. Their experimental results are in excellent agreement with one of the main theoretical models for a quantum spin liquid, the Kitaev model. The research findings have long been published in the scientific journal Nature Materials. Quantum spin fluids are a mysterious aggregation state "hiding" inside certain magnetic materials, although it has never been formally observed in nature.
Observing one of the most fascinating properties of this state of aggregation in real materials - electron splitting - is a breakthrough. The resulting particles, Majorna fermions, can be used as building blocks of quantum computers, which will be much faster than today's computers. "This is a new quantum state of matter, one that was previously predicted but never seen before," said one of the researchers from the University of Cambridge.
In a normal magnetic material, each of the electrons behaves like a tiny magnet. When a material is cooled to a sufficiently low temperature, these magnets will organize themselves in an orderly manner over a wide range, so that all the north poles point in the same direction. However, in a material containing a state of spin liquid, even if the material is cooled to absolute zero, the tiny magnets will never arrange themselves in a fixed order, but will create a jumble as a result of quantum fluctuations. "Until recently, we didn't even know what the fingerprints of a quantum spin liquid should look like," said one of the researchers. The researchers used neutron scattering methods while testing the magnetic properties of ruthenium-chloride powder that was exposed to neutron radiation, and observing the interference pattern that the neutrons created on the screen as they scattered from the sample. An ordinary magnet would produce sharp and clear lines, but until now researchers did not know what the line pattern of Majorna fermions would look like in a quantum spin liquid. The theoretical prediction published by the researcher Knolle in 2014 about the pattern of the lines corresponded well with the results of the experiment: getting wide hills instead of sharp lines. These results constitute the first ever proof of the existence of a quantum spin liquid. "Our findings are an important step in understanding the quantum state of matter," explains the lead researcher.
9 תגובות
Although Majorna's premiums are from 1937, Kitaev's model from 2001, saturates it in 2008 and 2013, and KHOLLE's article from 2013. At the Technion, they are also running on two-dimensional quantum crystals, which indicates the global distribution of the research. Quantum travelers are also raised.
https://courses.physics.illinois.edu/phys598PTD/fa2013/L26.pdf
http://arxiv.org/pdf/1308.4336v1.pdf
Dr. Nachmani. The topic is very interesting. Tifala I got into the material, the main part of the road is ahead of me.
Joseph
Hebrew Hebrew. There is no Hebrew - takvant. Should be what you meant. disgrace. Is that what they taught you in elementary and high school?
Albert Einstein: The quant that quantum theory is incorrect, but you contributed to it the photoelectric effect (and you also received a Nobel Prize in 1922?) and you also made an attempt to unify together with Klotza between the theory of electromagnetic fields and the theory of general relativity - when the idea of an entangled dimension was first raised, As a geometric alternative to the electromagnetic force. An idea that was later adopted by string theory. And also the EPR paradox.
Einstein Podolsky Rosen - which has been proven wrong. It is allowed to be mistaken for her name.
Introductory material for Kitayev's model
https://courses.physics.illinois.edu/phys598PTD/fa2013/L26.pdf
Itzikzon's book statistical field theory (French) in 2 volumes, an introduction to statistical field theory.
A bit about Majorna premiums
https://en.wikipedia.org/wiki/Majorana_fermion
And there's a ton of free stuff online.
It's not what the online... Not important
What crystal growing ability achieves is to produce environments where physics is as much science as fiction and is available to many researchers. Just like the physics of extraterrestrial black holes and supernovae is as much science as fiction. Completely real but with phenomena that we are amazed by such as time space distortion and more.
It is worth explaining that a two-dimensional quantum material is a material that is grown using epitaxial evaporation, for example, in two dimensions. Thin layers made of various semiconductor materials such as gallium arsenide or gallium nitride or germanium silicon are grown in it.
As a result it has quantum wells or a conduction and valence band with periodic steps. Thus the electrons living in matter are quantum in 2 dimensions and classical quasi in the third.
It seems to me that the boy Professor Nathaniel Linder from the Technion (really a boy) deals with Majorna premiums.