Great Country Academician

After seeing off the two academicians, Xu Chuan picked up the report document on the development of the Magic City Institute of Mathematics and Interdisciplinary Studies from the tea table, shook his head, and threw it into the utility cabinet.

If he simply wanted to develop the basic science field in China, he would definitely support it with both hands.

Perhaps the Magic City does support the development of the basic science field, and talent training and introduction have always been the focus of domestic attention.

But the path they took was a bit crooked.

Although poaching people in the academic or scientific research community is not a big deal, poaching is poaching, and the idea of ​​the Magic City is not just poaching.

They are not just thinking about borrowing chickens to lay eggs. While using the resources of other research institutes to train their own people through cooperation, they are also trying to take the chicken away together.

To be honest, this approach is really unpleasant.

At the desk, Xu Chuan took out the theory of room-temperature superconducting materials copied yesterday from the drawer.

Although from the perspective of this era, let alone room-temperature superconductivity, even the mechanism of high-temperature superconductivity was made after he completed the strong correlation effect.

But from his perspective, the mechanism of room-temperature superconductivity is not something unknown.

Although the room-temperature superconducting materials developed in the previous life have significant defects, it is still possible to sort out the relevant mechanisms through experimental data.

Not to mention all, at least it is no problem to sort out some of the experimental data and related effects related to the formation mechanism of room-temperature superconductivity.

And the theory he copied these two days is exactly this part.

Superconductivity is a quantum phenomenon. The key is that electrons form symmetrical Cooper pairs to avoid mutual collisions between electrons and cause resistance.

In a room temperature environment, thermal motion will break the symmetry of this Cooper pair, leading to the rupture of the superconducting state.

In order to achieve room-temperature superconductivity, he found a method in the field of condensed matter physics and materials science that can suppress thermal motion.

That is, the theory of localized construction of condensed matter electrons.

Experimental research data show that controlling the lattice structure is one of the key factors in achieving room-temperature superconductivity. By artificially designing the lattice structure of the material, the destructive effect of thermal motion on the Cooper pair can be effectively reduced, thereby achieving room-temperature superconductivity.

In addition, in the study of room temperature superconductivity, Xu Chuan also found that introducing localized electron pair coupling in some specific materials can also increase the superconducting critical temperature of the material and make it close to room temperature.

High-temperature copper-carbon-silver composite superconducting materials are based on localized electron pair coupling to increase the superconducting critical temperature.

Even though it has been on the market for several years, it has been facing research from countries around the world, and it still maintains the first position in comprehensive properties, which shows its excellent performance.

Looking at the research mechanism of room temperature superconductivity, Xu Chuan's eyes were thoughtful.

"The localized structure of electrons mainly involves the state of electrons occupying specific energy at specific positions in solid materials. It is an electronic state with specific energy related to specific positions in solid materials."

"When an electron occupies this state, it is bound to a specific position with specific energy. In disordered solids, due to the destruction of periodicity, a band-tail localized state will be generated. Defect states in materials or electronic states on donor-acceptor impurities, or band-tail states in strongly doped semiconductors are also localized states."

"This localized electronic state is the core of room-temperature superconducting materials, which not only gives the material superconductivity at room temperature, but also solidifies the physical properties of the material to a certain extent."

The copper oxide-based chromium-silver superconducting material in his hand is affected by this mechanism, becoming difficult to process and industrialize. The superconducting layer on the surface of the material is prone to lose its superconducting properties when it is shaken or bumped.

This is a physical property affected at the microscopic level. It gives superconducting properties while bringing defects, which is extremely difficult to change.

Even high-temperature copper-carbon-silver composite superconducting materials are brittle like ceramics due to localized electron pair coupling.

Later, the optimization was completed by toughening with graphene and whiskers (fibers).

So how to optimize the copper oxide-based chromium-silver superconducting materials by doping?

Staring at the manuscript on the desk, Xu Chuan fell into deep thought.

Condensed matter physics is a discipline that studies the microscopic structure of physics and the relationship between them.

That is, by studying the motion forms and laws of electrons, ions, atoms and molecules that constitute condensed matter, the physical properties of the materials can be understood.

The mechanism of room temperature superconducting materials is completed through condensed matter physics.

But the deeper you go into the microscopic world, the more refined the physical properties of the materials become, and every change in a detail may lead to a major change in the overall physical properties of the material.

This is also the most troublesome part for Xu Chuan.

Copper oxide-based chromium-silver superconducting materials are more brittle than ceramics, and plasticity is more difficult. Once the superconducting layer is damaged, most of the superconducting properties will be lost, and other defects are avoided. These are all areas that need to be optimized.

A problem is easy to solve, and you can keep trying to optimize it through experiments. Quantitative changes pile up into qualitative changes and spend time to find an optimized solution.

But when multiple problems are entangled together, it becomes difficult to deal with.

Although materials science is a science, it relies more on luck than other subjects.

Sometimes you do an experiment a hundred times, but others can do it in one time.

For those who are lucky, the probability of success in this subject is really higher.

Xu Chuan had never thought of solving the problem of optimizing copper oxide-based chromium-silver room temperature superconducting materials through theory, but he wanted to find one or some roughly feasible research directions for these problems through theory.

This is actually to transfer the experimental difficulties to theoretical research that he is more comfortable with. For him, this method will make it easier to make breakthroughs.

In fact, this is not the first time he has done this.

As early as when he was studying the controlled nuclear fusion technology of lithium-sulfur batteries and stellarators, he did this, transferring the experimental and engineering difficulties to theory to achieve breakthroughs.

This time, Xu Chuan was also prepared to do this, but after two days of research, he had no idea how to change the properties of copper oxide-based chromium-silver room temperature superconducting materials.

"Forget it, let's make the materials first."

After tidying up the manuscript on the table, Xu Chuan shook his head and stuffed it into the scanning device.

"Xiao Ling, help me organize the information on these manuscripts."

A small chat box popped up in the lower right corner of the computer screen.

"Received! Master (ov)ノ."

Take a sip of the tea on the table, and Xu Chuan's eyes fell on the computer.

It must be said that with Xiao Ling, the AI ​​academic assistant, it is very convenient to organize data documents.

In the past, he needed to work on the manuscript for two or three days by himself, but now Xiao Ling can get it done in less than ten minutes.

In the time of a cup of tea, Xiao Ling has sorted out the relevant information.

"Master, the information has been sorted out!"

A small chat box popped up, Xu Chuan dragged the mouse, clicked on the sorted document on the desktop, and checked it carefully.

After confirming that there was no problem, he nodded with satisfaction and smiled: "Separate the first to twenty-seventh pages of the information, name it "Condensed Matter Electron Localization Structure Theory", and then print it out in three copies."

Xiao Ling: "Received, the information has been separated. Printing in progress"

Looking at the chat box on the screen, Xu Chuan took out his mobile phone from his pocket and sent a message to Zheng Hai.

"Come to the teaching building and take me to the Chuanhai Materials Research Institute."

It's time to move forward in the research of superconducting materials.

Jinling, Qixiashan New Development Zone.

A new industrial park has been built around the Chuanhai Materials Research Institute, with many companies and enterprises settled in.

At the headquarters building of the Chuanhai Materials Research Institute, Fan Pengyue, who had received the news in advance, was waiting in the office. Seeing Xu Chuan coming, he quickly stood up and greeted him with a smile.

"Are you here?"

"Yeah." Xu Chuan nodded, his eyes fell on the other two researchers in the office.

He knew both of them. The former was an acquaintance, one of the main researchers in the previous research on high-temperature copper-carbon-silver composite superconducting materials, Song Wenbai.

The other was Gong Zheng, who also studied superconducting materials, but his research direction was not how to create a superconducting material, but to optimize it based on the existing results.

These two people were selected by Xu Chuan from the institute by Senior Brother Fan. They were trustworthy and were used to assist him in completing the research work on copper oxide-based chromium-silver room-temperature superconducting materials.

"Academician Xu."

"Academician Xu."

After seeing Xu Chuan, Song Wenbo and Gong Zheng quickly stood up from the sofa and greeted him respectfully.

Xu Chuan nodded, took out the printed "Condensed Matter Electron Localization Structure Theory" document from the backpack he carried with him, and distributed a copy to each person.

"I'll give you half an hour to go through this theory roughly, and then I'll give you the task."

Hearing this, Fan Pengyue and the other two took the document from Xu Chuan with a hint of curiosity and started to read it.

"What is this?"

Seeing the title, Senior Brother Fan looked at Xu Chuan with some curiosity, with some questions in his eyes.

Xu Chuan smiled and said, "The speculation on the theoretical mechanism of room temperature superconducting materials, well, at least part of it, this research task is this."

Hearing this, the three people who were flipping through the documents stagnated their breathing, and the originally light information in their hands now seemed to weigh thousands of pounds, heavy.

Theoretical mechanism of room temperature superconducting materials!

If there is any material that can be called the jewel in the crown of materials science, it is undoubtedly room temperature superconducting material.

Of course, this is not a material, but a class of materials.

All materials that can achieve room temperature superconductivity can be called room temperature superconducting materials, in a broad sense.

In a narrower sense, materials that can achieve superconductivity under normal temperature and pressure can be called room temperature superconducting materials.

If it can be achieved, it will have a far-reaching impact on the fields of science and technology.

For example, magnets made of room temperature superconducting materials can be used in motors, high-energy particle accelerators, magnetic levitation transportation, controlled thermonuclear reactions, energy storage, communication cables and antennas, etc., and their performance is better than conventional materials.

The complete anti-magnetic properties of the material can also be used to make frictionless gyroscopes and bearings.

There is also the Josephson effect, which can make a series of precision measuring instruments as well as radiation detectors, microwave generators, logic elements, etc.

Although it is said that today, when controlled nuclear fusion technology has been realized, the importance of the application of the greatest attribute of room temperature superconducting materials in electrical energy has been reduced a lot.

But if it can be realized, it can still be said that it will greatly change the development of the entire society and technology.

Although the concept of room temperature superconductivity has attracted a lot of research and investment, there is no conclusive evidence that room temperature superconductivity has been realized.

In past studies, some reports claiming to have discovered room temperature superconducting materials were later proved to be inaccurate or the conditions were extremely special and could not be applied in practice.

Some claimants refused to disclose the material synthesis method, and some other "room temperature superconducting" synthesis methods that were disclosed could not be independently repeated by other research groups, and some research papers were withdrawn after being widely questioned.

For example, the latest news about room temperature superconducting materials today is undoubtedly the (LK-99) Pb-Cu-P-O material studied by South Korea.

The LK-99 room temperature superconducting material that was a sensation at the time was killed by their boss, the famous Academician Xu in front of them.

And now, he personally delivered the mechanism theory of room temperature superconductivity to them.

Suppressing the shock in his heart, Song Wenbai swallowed the air dryly and quickly glanced at the paper in his hand.

".Artificially design the lattice structure of the material to reduce the destructive effect of thermal motion on Cooper pairs"

"Pseudogap, charge-spin separation, linear resistance, and strong superconducting phase fluctuations are explained by the grand unified framework theory of strongly correlated electron systems to explain the regular placement of space groups (SG) in the lattice of superconducting materials."

"Is this explanation of the mechanism of room temperature superconductivity through the strongly correlated electron unified framework theory and BCS theory?"

After quickly flipping through the paper in his hand, Song Wenbo's eyes showed some thoughtfulness.

As a researcher in the field of materials, he has naturally read the strongly correlated electron unified framework theory, which is called the "Bible" by condensed matter physics.

And this condensed matter electron localization structure theory not only explains the mechanism of room temperature superconductivity, but also combines the strongly correlated electron unified framework theory and BCS theory through the pairing of local electrons and the regular effect in the lattice of space groups (SG) in superconducting materials.

But how to explain the lattice pre-pairing problem of room temperature superconductivity, which does not seem to be mentioned in this paper?

However, since he was just skimming through it, he wasn't sure if it was not in the paper or if he had missed it.

With a thoughtful look on his face, he quickly turned to the beginning of the paper and read it again from the beginning.

The paper was not very long, only less than thirty pages, so it was not a problem to read it again after skimming through it quickly.