"Hello?"

"Professor Gu?" Xu Mang's laughing voice reached Lao Gu's ears, and from this hearty laughter, there was no tension at all.

"Professor Xu... Is there anything wrong with you?" Professor Gu asked hurriedly.

"I'll briefly confirm a few things with you... 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... Is it possible to widely observe the singularity of angular magnetoresistance in magnetic materials?"

“...”

"The singularity of angular magnetoresistance?" Professor Gu asked curiously, "We... The singularity of angular magnetoresistance does not appear to be observed. ”

"Oh..."

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

Syllable!

Hang up the phone,

At this time, Professor Gu's expression was a little surprised, he was confused by Xu Mang, and suddenly a phone call was unguardable, and he asked a very strange question, whether the singularity of angular magnetoresistance can be widely observed in magnetic materials...

"How?"

"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 if the singularity of angular magnetoresistance can be widely observed in magnetic materials... My research team and I didn't find the singularity of angular magnetoresistance, so how could he ask this question?" Professor Gu frowned, his expression slightly strange.

Words fall,

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

The old man's face was full of question marks.

...

Magic City,

Xu Yang Research Institute,

Xu Mang was staying in his office, and according to Professor Gu's research, Xu Mang had reconstructed a new theoretical framework, and the new theoretical model was quite different from Professor Gu's, so Xu Mang gave him a call and confirmed some problems.

In Xu's theoretical model, new reactions and symmetries emerged, and Xu predicted that crystals composed of cerium, aluminum, germanium, and silicon would increase dramatically when the temperature dropped to a certain degree, about five K, and when the magnetic field was precisely aligned with one degree angle along the high symmetry direction of the crystal.

Just like the hands of a watch, the twelve o'clock and twenty-four o'clock time are struck with no other position, only when the direction or vector of the magnetic field is in a straight line with the axis of high symmetry of the material's crystal structure.

The resistance of the magnetic field will drop sharply if it rotates more than one degree from that axis, which is the result of calculations, although it is not yet known why this situation occurs in the model and the reason for its generation, but Xu Mang is going to solve this problem next.

Look for data in traditional materials that have the same situation, whether this abrupt enhancement of nature is also present in other materials.

Based on various data and Xu Mang's precise calculations, a seemingly correct conclusion has been obtained, and the theoretical model shows that this material composed of cerium, aluminum, germanium, and silicon does not react to a single component of the magnetic field like traditional materials, but to an 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, but Xu Mang did not explore the magnetic moment arrangement in depth, because it is necessary to do powder neutron diffraction research experiments on magnetic moments.

Experiment?

I'm sorry... 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 a crucial role in understanding the topological properties and magnetic domain properties of materials, so Xu Mang reconstructed a 2.0 theoretical model on the original basis.

The spontaneous symmetry failure caused by the ordered pairs of magnetic moments is related to the magnetic field and topological electronic structure, and a uniform and orderly switch between low-resistance and high-resistance states can be achieved through precise control of the direction of the magnetic field.

Next

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

Through model analysis,

There is indeed a singular response in other materials due to the electronic structure in magnetic materials with a small amount of free charge, which occurs in a punctate electronic structure, whereas the allowable electron momentum depends on the structure of the magnetic order.

"Hello?"

"Come here... There's one thing over to you. Xu Mang made a phone call to Wang Ai, and his tone was very serious.

soon

Wang Ai ran to Xu Mang's office and asked curiously, "Academician Xu... Any tasks?"

"Help me with first-principles electronic structure calculations. Xu Mang handed over a piece of information and said to Wang Ai: "Hurry up, I'll use it in a hurry... It's a test for you, and if you can't, I might consider keeping you in the gravitational wave detection lab, because you don't have the ability to do it in other areas. ”

Not to mention,

At this moment, Wang Ai was full of fighting spirit.

Watching Wang Ai leave, Xu Mang couldn't help but stretch his waist, and the next thing was to wait for the calculation results to rule out the change in atomic arrangement, that is, the structural phase transition, as the reason for the change in the resistivity of cerium-based materials.

Of course

If the result is different from what you predicted, then it's over... It's completely cool, but Xu Mang is very confident in himself.

In the past, Xu Mang might write a proposal and formulate the next experimental steps, and one person would do all the work, except for the experiment... But now Xu Mang only provides a theoretical model, and the rest of the things, even if he knows, he will not do it.

At this point, it is more about training, rather than doing research, from a professional scientific researcher, to training scientific researchers, Xu Mang has undergone a qualitative change.

It stands to reason that this is 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 uneasiness.

Xu Mang is now very worried about a situation, Wang Ai, Dong Yu, Zhang Yapeng, including Hu Jie, who has interned here for half a year before, Xu Mang is worried that these people will leave here, of course, the so-called departure is not simply leaving the Xu Yang Research Institute, but leaving Huaguo.

Suffice it to say,

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 his side, and they were also full of problems at the beginning, but they can't be said to be authoritative figures, they can also be regarded as top-level existences.

Dare to say that,

Any research institute is a very sought-after commodity, Xu Mang is happy to see them continue to go up, or carry the beam, but he does not want to see them leave China and go to foreign research institutions, never to return.

Xu Mang is very restrained in the number of people he receives, even if the Department of Physics of Fuda sends intern graduate students over, Xu Mang can at most take a look and point out the wrong places, he is worried that the talents he cultivates will never come after he goes abroad.

How to fix it?

I'm sorry... In reality, most of the facts are like this, and Xu Mang can only resign himself to fate.

"Hello?"

"Wife... It's over. Xu Mang received a call from Xiao Man and asked curiously, "You sent another batch of supplies?"

"Hmm..."

"Husband... One of my high-level technical employees was poached. Yang Xiaoman's mood was very low, and he said silently: "I have already done the position of supervisor, but I left all of a sudden, and I was given a technical policy last month, but the news of my resignation yesterday reached my ears." ”

Words fall,

Xiao Man said helplessly: "It's so cruel... Obviously, it was all planned, but it turned out to be in front of me to pretend that I could go to the soup for the company. ”

"Husband?"

"Is it true that people who are really determined to leave will always close the door quietly?" Yang Xiaoman said silently: "I think of a sentence... Leaving with great fanfare, in fact, is all a temptation, the real departure is no goodbye, the people who have never shouted to leave at the top of their voices are the last to pick up the glass slag that fell to the ground, bent over and picked it up one by one. ”

"And the person who really leaves and wants to leave, just picks a day that is windy and beautiful, goes out in the most ordinary clothes, and... He never came back. Yang Xiaoman sighed and said helplessly: "I finally know now... People who really want to leave are so stingy that they feel like a waste of time even saying 'goodbye'. ”

"Husband?"

"You... When you leave me, can you talk to me and see me one last time. ”

At this time,

Xiao Man's tone was full of a pitiful weakness.

“...”

"Don't make a fuss!"

"Give me ten guts, and I won't dare to divorce you. Xu Mang said with a black line on his face: "Wife... Are you going through menopause early? You're menopause too early, aren't you? It's almost 20 years early, or have you been bored lately... Watching soap operas stupid your brain?"

As soon as the voice fell,

Yang Xiaoman exploded on the spot, and roared angrily at Xu Mang: "Can you say a few words? When you are so moved, shouldn't you comfort my mother? The atmosphere that I finally laid down is gone!"

Xu Mang: Embarrassed

Blame me?

"Ahem..."

"What do you want to eat at night?" Xu Mang asked cautiously, "Uh... How about the troop hot pot?"

"Don't!"

"I'm going to eat... Hamburger meat. "Yang Xiaoman's appetite has recently developed in the direction of Japanese food, and he has been particularly fond of the so-called sashimi before.

"Okay!"

"I'll do it for you at night. ”

syllable

Hang up directly,

did not give Xiao Man any chance to speak.

"Whew..."

"This woman is crazy!" Xu Mang sighed.

Then

Silently took out a notepad from the drawer.

XX month XX day, sunny day.

I sat in my chair and thought about it for five minutes, my heart beating three hundred and eighty-seven times, and I really couldn't figure out why Xiao Man was getting more and more stupid, and if he continued to be stupid like this... It's about to get out of the minimum standard of human intelligence.

Write down,

Closing the notebook, the cover reads 'Yang Xiaoman's Wonderful Life'.

however

Next, Xu Mang's brain twitched and he threw it directly into his handbag.

......