Analyses how to choose the most suitable material wear-resisting thermocouple

Weyl half metal is a set of new wear-resistant thermocouple, found on the way in which the effect of charge carriers and the role of electrons and positrons in particle accelerators. From physical science and technology institute in Moscow and st Petersburg Ioffe institute scientists proved that these thermocouples means is wearable thermocouple impeccable gain medium. The results of the study, published in Physical Review B. 21 -

Century physics by the search for from the basic particles in the field of desktop wear-resistant thermocouple phenomenon said. In some crystal, electronic spread as high-energy particles in accelerators. In other cases, the particles with slightly even the nature of the substance similar to a black hole.

MIPT physicists turn this hunting from inside to outside, indicates that in the known as the crystallization of Weyl half metal wear-resistant thermocouple and ban of elementary particles reaction. In particular, this applies to released without light particles - each other The antiparticle annihilation reaction is prohibited. This attribute suggest Weyl half metal can become the perfect laser gain medium.

in the semiconductor wear-resistant thermocouple, radiation is by an electronic eliminate each other and positive carrier called cavitation. However, light emitting electronic - just Hole of collision may result. Or, the energy can increase the atomic oscillations near or adjacent electronic heating. After a process known as auger recombination, in recognition of the French physicist Pierre auger.

auger recombination limits the contemporary the efficiency of laser in the infrared and visible light range, and ruthlessly destroyed the terahertz wear-resistant thermocouple. It consumes pair may produce radiation. In addition, the process of heating equipment.

in almost a century, scientists have been pursuing a & other; Miracle wear-resistant thermocouple & throughout; Restructuring, including radiation dominated the auger recombination. The search is put forward in 1928 by Paul Dirac an idea guidance. He put forward a theory that has been found that the electron has a positively charged twin grain positrons. Four years later, through the experiment proves that the forecast. In the calculation of Dirac electrons and positrons annihilate always produce light, can't deliver other electronic energy. This is the miracle of looking for wear-resistant thermocouple used in wear-resistant thermocouple is mainly to find the cause of Dirac electrons and positrons analogues in the semiconductor.

“ Our latest papers show that Weyl metal is we come nearest to the implementation and Dirac electrons and positrons analogy, & throughout; Svintsov added that he is a research report, the chief researcher.

the electrons and holes in semiconductor has the same charge and Dirac particles indeed. But it needs not only remove the auger recombination. Laser engineer's goal is to find the match the Dirac theory the dispersion relation of the particles. Who will be the particle kinetic energy and momentum. The encryption on particle motion equation and its reaction can experience all of the information.

in classical mechanics, such as planets, such as rock or a spacecraft object based on secondary dispersion equation. That is to say, copy the momentum can lead to kinetic energy increased four times. In traditional semiconductor - Germanium and silicon or gallium arsenide The dispersion relations is secondary. Photonic dispersion relations are quantum of light, it is linear. One problem is the photon is always in precisely the speed of light transmission.

positron and electron in Dirac's theory is located in the middle ground between photon and rock: under the low energy, the dispersion relation is secondary, but in the higher energies, it becomes linear. Until recently, however, it will also need a particle accelerator electronic & other; The ejection & throughout; The dispersion relation of linear area.

some of the recent discovery of wear-resistant thermocouple can act as a charged particle & other; Pocket accelerator & throughout; 。 Including & other; Pencil accelerator & throughout; - Graphene and its 3 d analogue, called Weyl semimetal: phosphate niobium, tantalum arsenide and telluride molybdenum. In these wear-resistant thermocouple, electronic follow the linear dispersion relation of starting from the lowest energy. That is to say, the effect of charge carriers is similar to the charged photons. As you can see these particles and Dirac electrons and positrons are similar, but their quality is close to zero.

scientists have shown that although the quality is zero, but still in the Weyl half metal auger recombination is prohibited. Predict the actual crystals in dispersion relations is not strictly linear opposition, because of deviating from the law of linear team continue to calculate & other; Residual & throughout; The probability of auger recombination. This depends on the probability of electron concentration can reach about 10000 times less than the currently used semiconductor value. In short, the calculation results show that the concept of Dirac in the Weyl half metal rather focus again.

the researchers assessed the Weyl electronic - half metal The hole on the life expectancy of about 10 nanoseconds. According to the standard, the time span seems to be very small, but for laser physics, it is huge. In range of the far infrared laser technology used in conventional wear-resistant thermocouple, holes and electrons shorten the life of thousands of times. Extend new wear-resistant thermocouple china-africa balance the life of the electrons and holes, for they are in the application of new type of long wave wear-resistant thermocouple paved the way. Recommendation:

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