From Almighty Scholar to Chief Scientist

Chapter 317 Visiting the Institute of Physics
"We all know that an atom is composed of the outer shell of electrons and the nucleus."

"And the atoms we draw on the drawings, although they are all round and look like a solid ball, in fact, it has no shell."

"Just like our solar system, the planets are electrons, and the sun is the nucleus, each with its own orbit."

"Of course, the two are slightly different. After all, multiple electrons can co-exist in one orbit, but our planet obviously cannot."

"However, the biggest difference is that atoms can be connected together, our sun is different, it will not be connected with other stars - of course, this is not absolute, when billions of Years from now, when the Milky Way and Andromeda collide, maybe our sun will connect with other stars."

"Of course, this matter is still too far away from us. Going back to the whole, when atoms are connected, the electrons between them form a connection point. Do you know the Jane's train hook? It is used to Connecting the carriages of the train, when the electrons are connected together, it is like the train hooks are connected together, but the train hooks are stronger, stronger than the chemical bonds between the electrons."

"As for the atoms on both sides of the electron, obviously there is not only such a connection, even the simplest hydrogen gas is also a connection formed by two electrons, and so many connections make our atom look like one thing—"

"Kink!"

"As for why I use kinks to describe them, here, let us go back to the knot theory."

"..."

In the lecture hall of the Institute of Physics of the Chinese Academy of Sciences, Lin Xiao stood on the stage and gave a report on the theory of electron topological bonding. The lecture hall was already full of people, even in the aisle.

Among them are top physicists in China, and some are not top physicists. Similarly, there are a lot of graduate students from physics institutes, and people from other places.

It was Lin Xiao's first report on the theory of electron topological bonding, and everyone didn't want to miss it.

And as Lin Xiao's narration began, and gradually entered the content, those graduate students and intern researchers.The assistant researcher and others all showed moved eyes.

Master student A: "I'm so touched, I actually heard Lin Shen's report!"

Master student B: "I'm ready to go back and watch the video. I didn't expect Lin Shen to speak so vividly."

Doctoral student: "Shen Lin really took good care of us!"

Intern researcher: "I can boast that I understand Lin Shen's report when I go out in the future."

However, just when they were moved by themselves, Lin Xiao on the stage suddenly said: "Well, here, we need to use some knowledge in topology, so I will briefly explain it to you from the perspective of mathematics."

Then he picked up the pen and wrote the formula on the blackboard.

"SH2≌Z/2Zx(T*T)..."

At this time, the postgraduates and ordinary researchers who felt that they were over were stunned when they raised their heads again.

Master student A: "What is this? You call this simple?"

Master student B: "I take back what I just said."

Others: ╥﹏╥

After all, the theory of electronic topological bonding is discussed using mathematics. If mathematics is not used in the report, it will definitely not work.

Of course, Lin Xiao didn't just use mathematics to continue talking directly. After simply using mathematics to demonstrate a point, he resumed speaking in a more easy-to-understand way.

However, just when the graduate students present thought that the "heavenly moment" just now was over, Lin Xiao suddenly began to use mathematical methods to discuss a key thing, so they could only fall into confusion and spend another time. This "heavenly moment".

In this way, with Lin Xiao explaining a point with very complicated mathematics from time to time, the report ended after about an hour.

There was warm applause, but except for those top physicists who could understand and listen to it, other physicists who were not top physicists and others could only follow the crowd with a hint of confusion in their eyes. proceed.

Then, several high-level officials from the Institute of Physics walked up and took a group photo with Lin Xiao.

After the group photo was finished, Fang Zhong, the director of the institute, smiled and said, "Professor Lin is really amazing. This theory of electron topological bonding is of great significance to our condensed matter."

Lin Xiao smiled and said, "There are many theories of condensed matter physics, and my theory can only play a small role."

Fang Zhong shook his head with a smile: "If you have a small effect, then we probably don't have any important theories in condensed matter physics. I myself study the theory of topological electronic states. After reading your paper on the theory of electron topological bonding , I was shocked at the time, and then I have been studying your theory."

"Haha, it's my honor to have an academician specializing in my theory."

Lin Xiao smiled.

"Hey, what's my honor? It's my luck to be able to study this theory. If I don't have this theory, where would I go to study the truth of our condensed matter physics?" Fang Zhong waved his hand and said with a smile: "By the way, when you come here, you are actually planning to visit our superconducting laboratory? Then shall we go now?"

"it is good."

Lin Xiao couldn't wait for a long time, and immediately responded.

Afterwards, Fang Zhong led Lin Xiao to their superconducting laboratory.

As one of the most important research directions in condensed matter physics, superconductors basically have such a superconducting laboratory in any institute of condensed matter physics.

The superconducting laboratory of the Institute of Physics is still a national key laboratory, with as many as thirteen academician researchers working in this laboratory.

Including Zheng Cheng and Xu Yan, who were also transferred here as researchers.

After Fang Zhong brought Lin Xiao into the laboratory, Academician Zhao Xian, the director of the superconducting laboratory, came to greet Lin Xiao in person.

Zhao Xian has been engaged in superconducting research for many years, and has won the Matthias Award, an important award in the field of superconducting physics, and has made many contributions in superconducting physics research.

After getting to know each other for a while, Zhao Xian took Lin Xiao to stroll around here, "Professor Lin, after studying the lithography machine, now you are suddenly interested in our superconductors?"

"Hehe, I believe that no physicist will not be interested in superconductors, it's just a difference in priority."

Lin Xiao replied with a smile.

"That's true."

Zhao Xian immediately smiled.

The hidden physical theory of superconductivity has a fatal temptation for every physicist. For example, the three physicists who first proposed the BCS theory to explain the principle of low-temperature superconductivity have won the Nobel Prize in Physics. Prize, and if someone can find the principle to explain high-temperature superconductivity, then, he will definitely get the Nobel Prize in Physics.

So every physicist is hungry for it.

"But unfortunately, there are fewer and fewer people who are still willing to study superconductivity."

Speaking of this, Zhao Xian shook his head and sighed, "Our laboratory used to have a lot of young people coming in every year, but now there are fewer and fewer."

Lin Xiao didn't speak, and stopped in front of a laboratory.

High Temperature Superconductivity Laboratory.

As a national key laboratory, the superconducting laboratory obviously does not mean that there is only one laboratory, but is composed of many different laboratories, and this high-temperature superconducting laboratory is one of them.

The so-called high-temperature superconductivity and room-temperature superconductivity, the high temperature of the former is relative to the low-temperature superconductor whose Kelvin temperature is below 77K. As long as the temperature required to maintain the superconducting state is higher than 77K, it can be called high-temperature superconductivity. As for room temperature Superconductivity, that is, a superconductor that can achieve superconductivity at room temperature, and this temperature is obviously much higher than 77K, because the room temperature needs to be 273.15K, which is above 0 degrees Celsius.

"Go in and have a look?" Zhao Xian said.

"Ah."

Lin Xiao nodded, and then walked in with Zhao Xian.

After entering, the ambient temperature seems to have dropped a bit, the space inside is very large, and at the same time, it is also a little messy.

As for the reason it looks messy, the main reason is that there are many lines inside and there is a huge instrument in the middle.

Looking at this thing, Lin Xiao couldn't help raising his eyebrows, and said, "This is an angle-resolved photoelectron spectrometer?"

"Yeah." Zhao Xian said with a smile: "ARPES, which specializes in the study of our solid state physics, can be used to analyze electronic structures."

Lin Xiao nodded: "I have to fix one for my research institute later."

Zhao Xian: "..."

Know your research has money, but don't show it off.

Without further ado, Zhao Xian brought Lin Xiao to the computer next to him, and began to introduce to him how to use the ARPES.

And Lin Xiao naturally grasped it quickly. For him, this is not a problem, let alone his current brain development speed, it is completely easy to understand.

Seeing that Lin Xiao should understand it, Zhao Xian did not doubt whether Lin Xiao really understood it, so he directly activated ARPES once, and then, first of all, the deep ultraviolet light was emitted from the light source system, and finally hit the material, The electronic structure of the material is then probed through the photoelectric effect.

Because of this role, ARPES is also known as "a microscope that can see electronic structures."

Soon, items of data appeared in front of them.

"What we are detecting now is yttrium barium copper oxide, which is now in a superconducting state. From the analysis of these data, we can see its electronic structure."

Zhao Xian said, then looked at Lin Xiao at the side.

Lin Xiao touched his chin at this time, and said thoughtfully, "Is this critical current density a little low?"

"Did you see it?" Zhao Xian was stunned for a moment. Can you tell this thing from these data?
"Well, according to the electron topological bonding theory, the structure reflected by this data must have a very low critical current density."

Lin Xiao's answer made Zhao Xian give a thumbs up.

"Great!"

Lin Xiao didn't say anything, just continued to look at the data, frowned and said: "However... if the structure is changed, it seems to be a little different."

"what?"

(End of this chapter)