Chapter 540

"Xu mang?"

"What's going on here?"

"Don't you... I remember you were studying axions?"

After the surprise, there was endless confusion. Fan Zhilong asked curiously, "how did you suddenly study the wail semi metal? And this Weyl semimetal is no simpler than your Axion, which was proposed more than 80 years ago

In the face of this situation,

Xu mang just chuckled and said quietly: "in fact... I found that there may be some relationship between the wilfermion and the Axion. I want to prove the werfermion first, and then find the Axion according to the existence of the fermion."

"You..."

"you have to solve three problems at once." Fan Zhilong helplessly said: "from condensed matter to high-energy particles, almost three miracles have been created."

"Not bad."

"But... Who knows." Xu mang said with a smile: "they are all illusory things. How difficult it is to find them. However, there are relevant theoretical supports for werfermions and wail Semimetals, but axions are simple predictions."

"By the way..."

"Professor Fan, do you think that the physical properties of the wail Semimetals that I speculate conform to its Weil fermion state?" Xu asked.

Fan Zhilong shook his head and said seriously, "give me half an hour. I need to have a good look at the content. I just took a look."

"Well!"

"By the way, I have breakfast." With a smile, Xu mang took out a group of rice dumplings, and then sat down at the corner to start eating. His group of rice was simple, with only a fried dough stick in it and sprinkled a little salt on it.

However, the more simple things are, the more delicious they taste. Xu almost feels the absolute balance between glutinous rice and fried dough sticks.

At this time,

Professor Fan Zhilong began to read the manuscript. The front part belongs to normal things, a solution obtained from Dirac equation. According to quantum theory, the werfermion is not a basic particle.

To be exact, the fermions exist in the form of quasiparticle excitation in condensed matter physics.

Then, Professor Fan saw the magic transformation. From the existence of the wail fermion state, he speculated the possible physical phenomena of the virial semi metal. According to the three characteristics given by Xu Mang, namely, the wail cone, Fermi arc and chiral anomaly, fan Zhilong vaguely thought of a material.

This kind of material he had encountered before, because it was too strange, coupled with the difficulty of research, was directly abandoned.

"Xu mang?"

"I do know that there is a material that matches the physical phenomenon you predict." Fan Zhilong seriously said: "once upon a time, when I was studying the Dirac electronic states of topological Semimetals, I had an idea according to the Dirac semimetallic material theory."

Xu mang was stunned for a moment and looked at him in surprise.

"At that time, I was thinking... What kind of metal would topological Semimetals be if they broke the spin degeneracy of their Dirac cones and split into chiral outer cones?" "I didn't know what kind of material it was at that time, but after reading your speculation about wail semi metal, I found that... It may be a wail semi metal!" Fan said

Sleeping trough!

It seems that... Seems to be the case!

By analyzing the hints given by fan Zhilong, Xu mang found that as long as the topological Semimetals were changed, the so-called Weier semi metals would appear.

"Damn it!"

"Professor Fan, you're a cow!" Xu mang said with a smile: "what material is it

"I don't know."

"I mean, semi metals change the structure according to the topology, and what the material is after the change... I don't know." "It is very difficult to break the inversion symmetry of time or space to realize the Weyer semi metal," Fan said helplessly

Indeed,

is very difficult!

According to Xu Mang's rough conjecture, fan Zhilong's bold conjecture is that the symmetry can be inversed by introducing the destruction time of magnetic atoms, or by continuously doping to control the composition and band structure to realize the Weier electronic state.

However,...

in the system, the magnetic domain brought by the magnetic atoms and the destruction of the translational symmetry of the atoms will hinder the intrinsic properties of the wail fermion.

The most important factor is how to realize the Weier electronic state through the inversion of symmetry through breaking the space, without the need for detailed and complicated regulation such as doping.

"..."

"..."

the two people stare at each other with big eyes, which is really embarrassing.

There seems to be no solution to the problem!

"Xu mang..."

"I can only help you here. The rest is up to you." "It's a hot topic in condensed matter physics, and many people are involved in it," Fan saidXu mang nods, the most likely occurrence of the werfermion state in condensed matter.

Unfortunately...

this is what a difficulty.

After leaving the laboratory,

Xu mang dawdled to the computer building. Using the materials science database, he made a series of deletions and selections based on three inferred materials, but the answer was no, which was another serious blow to Xu mang.

What to do?

Back in the apartment,

Xu mang made a systematic exploration on this problem, and finally felt that it was necessary to calculate the principle to find the material that was in line with the nature from the principle calculation, whether it could be realized or not... Let's talk about it later.

...

"Hua Lao!"

"Do you know what Xu mang is doing recently?" Fan Zhilong found Hua Lao and said seriously: "he has transferred from your particle physics to condensed matter physics."

"What?"

"He... He doesn't study axions anymore?" Hua Yanfeng asked with a confused face: "what is the situation? Does Xu mang think that the axis can not be found? "

Fan Zhilong shook his head and seriously said, "it's not so... On the contrary, it's the only way to find the axis."

Hua Yanfeng asked in a hurry: "what is the situation?"

"Xu mang thinks that the outer fermion may be related to the Axion, but if you want to prove the virfermion, you need to find the werfermion. This morning, I read his manuscript and found that his research on the outer half metal is very detailed."

Although Hua Yanfeng is a professor of particle physics, he also has some understanding of other aspects, such as the so-called Weier semi metal.

It's no easier than an axis!

Although there are equations and relative solutions, it is still difficult to implement.

"This..."

"I didn't expect that the study of an Axion would involve so many things." Hua Yanfeng said helplessly: "it is estimated that he is quite busy during this period."

"Ha ha..."

"it's more than just busy."

"I estimate that now Xu mang has been in a state of being in a state of great distress." Fan Zhilong said with a wry smile: "first of all, we need to find the werfermion, then prove the existence of the werfermion, and finally explore the Axion according to the wilfermion."

"..."

after hearing fan Zhilong's words, Hua Yanfeng didn't know how to speak for a while. What should I do?

This problem,

Hua Yanfeng thought about it and decided to find a lower Jun first. The best way is that the physics department can help Xu mang to do so many things alone. It is estimated that within a year, people will become stupid.

After a moment,

Hua Yanfeng found Fang Jun and told the director of the physics department what Xu mang had encountered.

"This problem..."

"I can only say that there is nothing I can do about it." Fang Jun shook his head repeatedly: "it's not that the department doesn't want to support Xu Mang, it's because of its limited ability. The research on wail Semimetals has never been put forward, including the following werfermions and axions."

"All we can offer is money and equipment." Fang Jun said, "what if I ask the academicians of the Academy of Sciences? I don't know if they can help it on the wail semi metal. "

Then he picked up the receiver and dialed a number.

Soon the number went through.

"Hello?"

"Lao Ji... Is our Fang Jun." On the one hand, do you understand the physical aspect of the matter

For a moment,

the other end of the phone fell into silence and did not speak for a long time.

"Fang Jun..."

"are you studying this in the Physics Department of Fuda?" The person on the other end of the phone said curiously, "I just ran into my team. What's your research status?"

"What?"

"You... Old Ji... You're not lying to me, are you?" Fang Jun was shocked and said, "you are also studying waier semi metal?"

"Yes

"The Institute of condensed matter of our Academy of Sciences, together with the three universities of Peking University of science and technology of Qing University, have jointly studied Werder Semimetals. At present, the theoretical part has been completed and the experiment will be carried out soon." The man named old Ji said, "what's your progress?"

For a while, Fang Jun did not know how to explain this situation. The research institutes affiliated to the Academy of Sciences and the University of science and technology of Peking University of science and technology jointly studied waier semi metals, which... Did not turn Xu mang into a dead end again?

"Nothing..."

"we have just started. Since you are studying, let's cancel the project." Fang Jun said calmly.

Old Ji heard Fang Jun's words and said in a hurry: "is it Xu mang?"

"..."

"no!""I have something else on my side. Hang up first."

Fang Jun didn't give old Ji a chance to speak, so he hung up the call directly.

"What's the situation?"

"The Academy of Sciences is also working on wail Semimetals?" Hua Yanfeng asked.

"It's... It's bad." Fang Jun reluctantly said: "the Institute of condensed matter under the Academy of Sciences and the three universities of Peking University of science and technology of Qing University, one institute plus three top universities, Xu mang... Xu mang is really out of time."

There is a big gap between the research institutes subordinate to scientific research and the three top universities in China, while Xu mang is the only one here.

"Well, actually."

"Let Xu mang have a rest." Fang Jun doesn't care much about it. On the contrary, he thinks it's a good thing for Xu mang. He can take this opportunity to relax. If a person is forced too hard, he can easily get into trouble or even collapse.

"Yes

"Who will study is not research. On the contrary, I think it is more appropriate for Xu mang to have a rest." Hua Yanfeng said with a smile.

After Hua Yanfeng left,

Fang Jun immediately called Xu mang to tell him some realistic situations.

"Hello?"

"Xu mang?"

"Are you studying the Weyl semi metal?" Fang Jun said: "forget it, stop it. The Institute of condensed matter affiliated to the Academy of Sciences and the three universities of Peking University of science and technology of Qing University have jointly worked on the research of wail semi metals. At present, they have completed the theoretical framework. You can have a rest and don't make yourself too tired."

"What?"

"You... You've completed the theoretical framework?"

Hearing Xu Mang's reply,

director Fang Jun was at a loss.

......

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