Chapter 853

"Hello?"

"Professor Gu?" Xu Mang's laughing voice reached Lao Gu's ears, from which he could not hear any tension.

"Professor Xu... Can I help you?" Professor Gu asked in a hurry.

"I'll simply confirm with you something... Don't be so nervous, it's not that I can't solve it." "I found a problem in your theoretical model... Can the singularity of angular magnetoresistance be widely observed in magnetic materials?" Xu explained

"..."

"singularity of angular magnetoresistance?" Professor Gu asked curiously, "we don't seem to have observed the singularity of the angular magnetoresistance."

"Oh..."

Xu mang was silent for a moment and said seriously, "I'll give you the standard theoretical model tomorrow morning, goodbye..."

PA!

After hanging up the phone,

at this time, Professor Gu's expression was somewhat surprised. He was confused by Xu mang. Suddenly, a phone call was beyond defense. As a result, he asked a very strange question: can the singularity of angular magnetoresistance be widely observed in magnetic materials...

"how to say?"

"What did academician Xu tell you?" Lao Fang, who was sitting in front of Professor Gu, looked at his friend curiously and asked in a hurry.

"Professor Xu asked me whether the singularity of angular magnetoresistance can be widely observed in magnetic materials... My research team and I have not found the singularity of angular magnetoresistance. How could he ask this question?" Professor Gu frowned with a slightly strange expression.

As a result,

Professor Gu added: "by the way, we can get a new theoretical model the next morning."

Lao Fang's face was full of question marks.

...

Magic capital,

Xuyang Research Institute,

Xu mang is staying in his office. According to Professor Gu's research content, Xu mang reconstructs a new theoretical framework. The new theoretical model is quite different from Professor Gu's, so Xu mang calls him to confirm some problems.

In Xu Mang's theoretical model, there are new reactions and symmetries. Xu mang predicted that the crystal composed of cerium, aluminum, germanium and silicon, when the temperature drops to a certain degree, is about 5K. When the magnetic field is precisely aligned with one degree angle along the crystal's high symmetry direction, the resistance of the crystal will increase sharply.

Just like the hands of a watch, when 12 o'clock and 24 o'clock sound, there is no other position of the pointer. Only when the direction or vector of the magnetic field is in line with the axis of high symmetry of the crystal structure of the material, such resistance will appear.

When the magnetic field rotates more than one degree from that axis, the resistance will drop sharply. This is the result of calculation. Although it is not known why such a situation occurs in the model and the reason for its occurrence, Xu mang will solve this problem next.

The purpose of this paper is to find out whether the data with the same situation in traditional materials also exist in other materials.

According to various data and Xu Mang's accurate calculation, a seemingly correct conclusion is drawn. The theoretical model shows that the material composed of cerium, aluminum, germanium and silicon does not react to the single component of magnetic field as the traditional materials do, but to the absolute vector direction.

However, it is only allowed to achieve a special state under special conditions, and the enhancement is limited by the height of the magnetic field along the crystal axis, indicating that symmetry plays a key role. However, Xu mang did not explore the magnetic moment arrangement in depth, because it is necessary to conduct powder neutron diffraction research on the magnetic moment.

Experiment?

I'm sorry... I'm not available!

After all, he is an expert in theoretical physics, a giant in thought and a dwarf in action.

However, through his new theoretical model, Xu mang found that this new concept plays an important role in understanding the topological properties and magnetic domain properties of materials. Therefore, Xu mang reconstructed a 2.0 theoretical model on the original basis.

The spontaneous symmetry destruction caused by the ordered pair of magnetic moments is related to the magnetic field and the topological electronic structure. If the magnetic field direction is precisely controlled, the uniform and orderly low resistance and high resistance states can be switched.

Next,

is to solve a puzzle in Xu Mang's mind, and to solve a question asked by Professor Gu before, whether the singularity of angular magnetoresistance can be widely observed in magnetic materials.

According to the model analysis,

there is a singular response in other materials, because the electronic structure with a small amount of free charge occurs in the point electronic structure, and the allowed electron momentum depends on the structure of magnetic order.

"Hello?"

"You come here... There's something for you." Xu mang made a phone call to Wang AI in a very serious tone.

Soon,

Wang AI ran to Xu Mang's office and asked curiously, "academician Xu... What's the mission?"

"Help me with first principles calculations of electronic structures." Xu handed a document to Wang AI and said, "a little faster, I'm waiting for urgent use... This is your assessment. If you can't make sure, I may consider allowing you to stay in the gravitational wave detection laboratory, because you don't have the ability to play in other fields."Let alone,

at this moment, Wang AI is full of fighting spirit.

Watching Wang AI leave, Xu can't help but stretch his back. The next step is to wait for the calculation results to exclude the change of atomic arrangement, that is, the structural phase transition, as the reason for the change of resistivity of cerium based materials.

Of course,

if the result is not the same as what he predicted, it will be finished... Completely cool, but Xu is very confident of himself.

In the past, Xu mang might have written a proposal to formulate the next experimental steps. One person would do all the work, except the experiment. But now Xu mang only provides a theoretical model, and even if he knows, he will not do the rest.

At this point, it is more about training than doing research. From a professional researcher to training a researcher, Xu has undergone a qualitative change.

Normally speaking, it is a relaxed stage, but Xu mang feels that pressure is pressure. Some of them are from the environment, some are from others, but more is his own restlessness.

Xu mang is very worried about a situation. Wang AI, Dong Yu and Zhang Yapeng, including Hu Jie, who had been practicing here for half a year, is worried that these people will leave here. Of course, the so-called leaving is not simply leaving Xuyang Institute, but leaving China.

It can be said that

Wang AI, Dong Yu and Zhang Pengyu are Xu Mang's most proud disciples. From the moment the gravitational wave laboratory was built, these three people followed him. At the beginning, there were many problems, but they could not be said to be authoritative figures. They were also top-level existence.

To be sure,

any research institution is very popular. Xu mang is happy to see them go up or shoulder the beam, but he doesn't want to see them leave China and go to foreign research institutions, and never return.

Xu mang is very restrained in the amount of his income. Even if the Physics Department of Fuda sends internship postgraduates here, at most, he just takes a look and points out the wrong places. He is worried that the talents trained will never come after going abroad.

How to solve it?

I'm sorry... Most of the reality is like this, Xu mang can only let the fate.

"Hello?"

"Wife... It's over." Xu mang received a call from Xiaoman and asked curiously, "did you send another batch of materials?"

"Well..."

"my husband... One of my senior technical staff has been poached." Yang Xiaoman's mood was very low. He said in silence: "all of us have worked in the position of supervisor. As a result, he left suddenly. Last month, he gave me a technical guideline. As a result, the news of yesterday's resignation reached my ears."

As a result,

Xiaoman said helplessly: "it's so cruel... It's clearly planned. As a result, I pretend to be able to go through fire and water for the company in front of me."

"Husband?"

"Is it true that those who are determined to leave will always have the least sound of closing the door?" Yang Xiaoman said in silence: "I think of a word... Leaving with great fanfare is actually a trial. The real departure is no farewell. The people who always shout to leave are the last to pick up the glass dregs that have fallen all over the ground."

"Those who really want to leave just choose a day of Feng and Li, wear the most common clothes and go out, and then... Never come back." Yang Xiaoman sighed and said helplessly, "now I finally know... People who really want to leave are so stingy that even a" goodbye "is a waste of time."

"Husband?"

"When you... Leave me, can you tell me and see me for the last time."

At this time,

Xiaoman's tone is full of a kind of tender and tender.

"..."

"don't make noise!"

"Give me ten courage, and I dare not divorce you." Xu mang a face black line ground says: "wife... Are you ahead of menopause? Is your menopause too early? Almost 20 years ahead of schedule, or is it boring to watch soap operas recently

As soon as the voice dropped,

Yang Xiaoman exploded in situ and roared angrily at Xu Mang: "can you speak a few words? When you are so moved, shouldn't you comfort me? Now it's all right, mom. I can't easily pave the way for the atmosphere. It's all gone! "

Xu Mang: do you blame me?

"Keke..."

"what would you like to eat in the evening?" Xu mang asked cautiously, "er... How about the military hotpot?"

"No!"

"I'll have... Hamburger." Yang Xiaoman's recent appetite for food and food development, before the special love so-called sashimi.

"OK!"

"I'll make it for you in the evening."

PA,

hang up the phone directly,

did not give Xiaoman any chance to speak."Hoo..."

"this woman is idle and crazy!" Xu mang said with emotion.

At this time,

silently from the drawer, take out a notebook.

XX, XX, sunny day.

I sit in the chair thinking for five minutes, heart beating 387 times, I really can't understand why Xiaoman is more and more stupid, and if I go on like this, I will break away from the minimum standard of human intelligence quotient.

Close the notebook, and the cover says "Yang Xiaoman's wonderful life.".

However,

next, Xu mang lost his head and threw it directly into his handbag.

......

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