Chapter 853: Atmosphere Terminator (one/two)

"Hey?"
"Professor Gu?" Xu Mang's smiling voice reached Old Gu's ears. From the hearty laughter, there was no sense of tension at all.
"Professor Xu... are you okay?" Professor Gu hurriedly asked.
"I and you briefly confirm some things... Don't be so nervous, it's not that I can't solve it." Xu Mang explained: "I found a problem in your theoretical model... Can the angles be widely observed in magnetic materials? The singularity of magnetoresistance?"
"..."
"The singularity of angular magnetoresistance?" Professor Gu asked curiously: "We... don't seem to observe the singularity of angular magnetoresistance."
"Oh..."
Xu Mang was silent for a while and said seriously: "I will give you the standard theoretical model tomorrow morning, goodbye..."
Snapped!
hang up the phone,
At this time, Professor Gu’s expression was a little surprised. He was confused by Xu Mang. Suddenly a phone call was overwhelming. As a result, he asked a very strange question. Is the singularity of angular magnetoresistance 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 hurriedly asked.
"Professor Xu asked me about whether the singularity of angular magnetoresistance can be widely observed in magnetic materials... My research team and I did not find the singularity of angular magnetoresistance. Why would he ask this question?" Gu The professor frowned, his expression slightly strange.
Words fall,
Professor Gu added: "By the way, we can get a brand new theoretical model the next morning."
Lao Fang's question mark on his face.
...
Magic city,
Xu Yang Institute,
Xu Mang was staying in his office. According to Professor Gu’s research, Xu Mang reconstructed a new theoretical framework. The new theoretical model was quite different from Professor Gu’s. Therefore, Xu Mang called him to confirm Some questions.
In Xu Mang’s theoretical model, new reactions and symmetry appeared. Xu Mang predicted that crystals composed of cerium, aluminum, germanium, and silicon would be affected when the temperature drops to a certain level, which is about 5K. When the high symmetry direction of the crystal is precisely aligned with an angle of one degree, the resistivity of the crystal will increase sharply.
Just like the hands of a watch, there are no other positions for the hands at twelve o'clock and twenty-four o'clock, 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 yet known why this happens in the model and the reason for its occurrence, Xu The next step is to solve this problem.
Look for data with the same situation in traditional materials, and whether this sharply enhanced property is also present in other materials.
Based on various data and Xu Mang’s precise calculations, I probably got a seemingly correct conclusion. The theoretical model shows that this material composed of cerium, aluminum, germanium and silicon is not as sensitive to magnetic fields as traditional materials. The individual components react, 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 of the need Do powder neutron diffraction research experiments on magnetic moments.
experiment?
Sorry...no time!
After all, he is an expert in theoretical physics, a giant in thought, and a short in action.
However, through his new theoretical model, Xu Mang found that this new concept plays a vital role in understanding the topological and magnetic domain properties of materials. Therefore, Xu Mang reconstructed a 2.0 theoretical model on the original basis.
Among them, the spontaneous symmetry destruction caused by the ordered pairs of magnetic moments is related to the magnetic field and the topological electronic structure. If the direction of the magnetic field is precisely controlled, a uniform and ordered switching between low resistance and high resistance can be achieved.
Next,
It is to solve a doubt in Xu Mang's mind, and to solve a question I asked Professor Gu before, whether the singularity of angular magnetoresistance can be widely observed in magnetic materials.
Through model analysis,
There is indeed a strange response in other materials, because the electronic structure with a small amount of free charge in the magnetic material occurs in the point-like electronic structure, and the allowable electron momentum depends on the structure of the magnetic order.
"Hey?"
"Come here for a moment... there is one thing for you." Xu Mang called Wang Ai with a serious tone.
quickly,
Wang Ai ran to Xu Mang's office and asked curiously: "Academician Xu...does he have any tasks?"
"Help me get the first-principles electronic structure calculation." Xu Mang handed a piece of information, and said to Wang Ai: "A little bit faster, I'll wait and use it in a hurry... This is an assessment for you, if you can't figure it out If so, I might consider letting you stay in the gravitational wave detection laboratory because you do not have this ability to play in other fields."
Not to mention,
At this moment, Wang Ai was full of fighting spirit.
Seeing Wang Ai's departure, Xu Mang stretched out a bit. The next step was to wait for the calculation results to rule out the change in atomic arrangement, that is, the structural phase change, as the cause of the change in resistivity of the cerium-based material.
of course,
If the result is different from what he predicted, then it's over...it's completely cool, but Xu Mang is confident in himself.
In the past, Xu Mang might write a proposal to formulate the next experimental steps, and one person will take care of all the work, except for the experiment... But now Xu Mang only provides a theoretical model, and the rest, even if you know it. Won't do it.
At this point, it is more about training than doing research. From a professional researcher to training a researcher, Xu Mang has undergone a qualitative change.
It stands to reason that it is now a relaxed stage, but Xu Mang feels that pressure is pressure, some are pressure from the environment, some are pressure from others, but more of his own anxiety.
Xu Mang is now very worried about a situation, Wang Ai, Dong Yu, Zhang Yapeng, including Hu Jie who had been intern here for half a year. Xu Mang is worried that these people will leave here. Of course, the so-called leaving is not simply leaving the Xu Yang Institute. , But to leave China.
you could put it that way,
Wang Ai, Dong Yu, and Zhang Pengyu should be regarded as 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 constant problems, but they cannot be said to be authoritative figures. , That can be considered a top-level existence.
Dare to say so,
Any research institution is very much in demand. Xu Mang is happy to see them continue to move up, or carry the big beams, but does not want to see them leave China and go to foreign research institutions, and never go forever. return.
Xu Mang restrained his income. Even if the Physics Department of Fu University sent intern graduate students, Xu Mang would only take a look and point out the wrong place. He worried that the talents he cultivated would never come after he went abroad.
How to solve?
Sorry...the reality is mostly like this, Xu Mang can only resign himself to fate.
"Hey?"
"Wife...it's over." Xu Mang received a call from Xiaoman and asked curiously: "You sent another batch of supplies?"
"Ok..."
"Husband... one of my high-level technical employees was poached." Yang Xiaoman was very depressed, and said silently: "I have already reached the position of supervisor, but I suddenly left. Last month He gave me a technical policy, and the news of my resignation reached my ears yesterday."
Words fall,
Xiaoman said helplessly: "It's cruel...Obviously, it's already planned, but in front of me I pretended to be able to go through fire and water for the company."
"Husband?"
"Is it true that people who are really determined to leave, the sound of closing doors is always the smallest?" Yang Xiaoman said silently: "I thought of a word...Leaving with fanfare is actually a test, and there is no farewell to true leaving. People who have always shouted to leave with their throats are the last ones who stooped to pick up the glass that fell to the ground one by one."
"And the person who really left wanted to leave, just chose a beautiful day, wore the most common clothes to go out, and then... never came back." Yang Xiaoman sighed, helplessly Said: "I finally know now... the people who really want to leave are so stingy that even a'goodbye' is a waste of time."
"Husband?"
"You...when you leave me, can you tell me a bit and then meet me for the last time."
at this time,
Xiaoman's tone was full of pitiful weakness.
"..."
"Don't make trouble!"
"Give me ten courage, I don't dare to divorce you." Xu Mang said with a black line: "Wife...Are you getting menopause early? Your menopause is too early, right? Almost early. Twenty years, or is it boring lately... I'm stupid by watching soap operas?"
As soon as the voice fell,
Yang Xiaoman exploded on the spot and yelled at Xu Mang angrily: "Could you say a few words? When you are so touched, shouldn't you comfort me? It's all right now... My mother, I have finally laid the groundwork. The atmosphere is gone!"
Xu Mang: 囧
Blame me?
"Ahem..."
"What do you want to eat tonight?" Xu Mang asked cautiously, "Uh... how about army hot pot?"
"No!"
"I want to eat... hamburger meat." Yang Xiaoman's recent appetite has developed in the direction of Japanese cuisine, and he was particularly fond of so-called sashimi before.
"okay!"
"I will make it for you tonight."
Snapped,
Hang up the phone directly,
Xiaoman was not given any chance to speak.
"call..."
"This woman is crazy!" Xu Mang said with emotion~EbookFREE.me~At this moment,
Silently took out a notebook from the drawer.
XX month XX day, sunny.
I sat in a chair thinking for five minutes, and my heart beats 387 times. I really can't figure out why Xiaoman is getting stupid and stupid. If he continues to be so stupid...it will break away from the minimum standard of human IQ.
Pen,
Close the notebook, and the cover says "Yang Xiaoman's Wonderful Life".
however,
Then Xu Mang twitched his mind and threw it directly into his handbag.
......
I really don’t want to lie down and win chapter list