Black Technology Incubation System

It was raining and foggy, Gu Xing got off the plane, and once again landed in this foreign land.

"Sir," Butler Wen Si drove over early, put his suitcase in the trunk for him, and asked, "Shall we go directly back to the manor?"

Gu Xingyi was already sitting on the back seat of the car, rubbing his eyes. During the long journey, he went into the training space to study the previous chip carefully. a little tired.

"Let's go to the laboratory first." Gu Xing glanced at the phone, and Xiao X had already told him the latest progress of the laboratory.

During the winter vacation, while he was busy with the expansion of future technology, he also held remote meetings with his researchers, and witnessed them develop the first generation of superconducting materials to the current fourth generation.

However, the performance of the new generation of products in the strong magnetic field is not satisfactory. The specific performance is that under the strong magnetic field, the room temperature superconducting material they made of the wire gradually loses superconductivity with the increase of the current, and the critical electric current of the transformation The density is stuck at 10 amps per square centimeter.

to the lab.

Gu Xingyi didn't go in immediately, but stood outside the laboratory watching the busy work inside.

Inside, another superconductivity test under a strong magnetic field is underway.

A half-person-high cylinder protrudes from the ceiling, and inside it is a single-coil magnet wound with soft copper, which is also the core of the entire large-scale pulsed strong magnetic field experimental device.

Right below the cylinder, the fourth-generation hydrogen-containing graphene high-voltage superconducting material has been pressed into a coil, and the current has been passed, quietly waiting for the baptism of the magnetic field.

Behind the special isolation window, a very small amount of helium is introduced, and the McMahon refrigeration device works quietly, and the temperature drops little by little.

"Current temperature: 75k." The experimenter in charge of monitoring the data reported.

"When the predicted temperature is reached, start the device." Dr. Rita confirmed the data and started the 36th experiment.

The buzzing sound of the machine sounded, and the vertical magnetic field of up to 102T was released instantly. Within the diameter range of only 100 micromillimeters, invisible forces spread out, silently changing all objects in the field from the atomic level.

The superconducting material that makes the wire is still quietly passing the current.

"It still maintains its superconducting properties." The previous monitor said again.

Everyone breathed a sigh of relief.

Dr. Rita took the experiment plan and continued to give instructions: "Increase the current."

The current in the unattractive coil increases little by little, and the detector collects the data into the computer, draws it into a picture, and projects it in front of all the researchers.

The voltage-current curve is like a creek, slowly passing through the forest, meandering on the 0 baseline.

At this time, it is still in the superconducting state.

The researchers in white coats all looked nervously at the huge projection, and followed the small black line that was slowly advancing.

As it approached the critical current measured last time, the atmosphere became more and more tense.Some people had already clenched their hands, calling out to God softly, while some were pacing back and forth restlessly, muttering to themselves.

Hans was raising his head, looking straight at the screen, his side face was covered with a layer of gold, and some kind of perseverance that belonged to the people of Dewill emerged.

Even the always proud Moersey leaned beside him, put one hand on his shoulder, looked down at the experimental data, and frowned more and more.

The invisible silk bundle is under everyone's neck, and it is tightened a little bit as the data is recorded.

Through the glass door, Gu Xingyi sighed in his heart - based on calculations based on the data he found before, he knew that this experiment must be the result of failure.

Finally, the superconducting state completely collapsed, and the curve climbed rapidly exponentially, leaping into a cliff in an instant.The number that blocked them last time appeared in front of them, and it became a natural barrier in the minds of countless superconductivity researchers.

Sighs came out of the laboratory one after another.

Immediately afterwards, someone couldn't help saying: "I miss Team Leader Gu. If he is here..."

Halfway through his words, he caught everyone's attention.

Immediately afterwards, similar complaints sounded one after another——

"If Gu was there, he would definitely tell us whether this road is feasible for you."

"If there is Gu's guidance, he will definitely cast a spell on the data now, and bring out the most important results!"

……

Gu Xing touched his nose. He originally wanted to communicate with Professor Joseph about the theory he thought of recently.But under the circumstances that everyone was looking forward to, he was too embarrassed to pass the door and not enter.

So, he knocked on the door of the laboratory: "Guys, I'm back."

The sound at the door quickly attracted the attention of the researchers, and everyone turned their heads, with unconscious smiles on their faces.

The scream instantly knocked over the ceiling.

Everyone cheered as if seeing the savior, and rushed over impatiently, looking at him with sparkling eyes and full of expectation.

Especially Hans and Morsey.

Dr. Rita should be relatively calm, stood at the back of the crowd with his hands on his chest, nodded to him with a smile, and mouthed: "Welcome back."

Gu Xingyi sighed, walked forward under the expectant eyes of everyone, held the data in his hand, and glanced up and down.Very well, the graphics under the scanning tunneling microscope and the results of the angle-resolved photoelectron spectroscopy are all as he expected, and this theory has credibility.

Then, he turned around, took the paper, and said the most anticipated sentence: "I think, I have a little idea about the establishment of a new theory."

For a long time, people have been in a state of not knowing why and how to use superconducting materials.

Even the laboratory led by Gu Xingyi only took a small step in application, and finally failed due to theoretical flaws.

In the past, the most widely recognized theory of superconducting materials was the BCS theory.Unfortunately, after establishing a complex model and quoting some parameters, this theory tells us that the upper limit of superconducting materials is only 40k, which is the Macmillan limit.

A desperate number.

Fortunately, countless unwilling scientists have broken this limit, and iron-based and copper-based superconducting materials with two-dimensional structures have become the pillars of new theoretical construction.

Since then, the research on high-temperature superconducting materials has entered into the continuous exploration of theories.It's a pity that human beings are still babies crawling forward in the dark, and can only grope to find the little bit of light.

Gu Xingyi organized his language and said: "First of all, what we are studying is an ideal two-dimensional system. Through the pairing of vortex and anti-vortex, it has a quasi-long program at low temperature. And the change of resistance and temperature will be able to It is fitted to the following formula... It can be seen that when α=3, the BKT topological phase transition will occur, and the phase transition temperature at this moment will reach 281k. This is a good result, and we have obtained a material at a suitable temperature .”

As he spoke, he pulled out the whiteboard specially prepared for him from one side, wrote down a set of formulas smoothly, and then made a circle on the final temperature.

"However, in the angle-resolved photoelectron spectroscopy, we only found three hole-type energy bands, and only one intersected with the Fermi surface," said Molesey, frowning, "resulting in a superconducting energy gap different from that of the previous formula. The fitting results do not match. And we generally believe that the rise of superconducting temperature often has an important relationship with the increase of carrier concentration."

Gu Xing shook his head, and pulled out the image given by the electron spectroscopy technique before.

Color blocks of different colors are distributed on the graphics, like an abstract painting.

But all of you here have studied this picture countless times, and are already familiar with the energy levels represented by different colors. When you look at it, you will have a three-dimensional image in your heart.

Gu Xing pointed to the hole, and drew the previous side screenshot from the side: "From here to here, there will obviously be a charge concentration transfer, and I suspect that this concentration transfer fills up the hole type at the T point." Fermi surface, thus changing the structure of the entire surface."

"You're right," Moersey lowered his eyes and recorded earnestly, with a docile look that made it impossible to connect with the arrogant researcher a month ago, "then you are interested in the high-temperature superconducting mechanism of this set of materials." Have you done any research?"

As soon as he asked this, the researchers who were busy copying the formulas all raised their faces and looked at Gu Xingyi with sparkling eyes.

Especially Hans, he was like a golden retriever who saw his bones. Gu Xingyi even saw his wildly wagging tail behind him in a trance.

"The contribution of high-temperature superconductivity mainly comes from the following three sources," Gu Xingyi picked up the eraser and erased the previous records, and took up his pen again, "Contribution of interface phonons, electronic doping, and lattice mismatch."

"We first define P as the magnitude of the galvanic couple generated by atomic displacement, then we can get the following formula," Gu Xingyi wrote a line, "Then take the integral and do Fourier to get the form in the momentum space ..."

His voice is cadenced, accompanied by the sound of the pen tip hitting the whiteboard, forming a great piece of music.

The only downside is probably the high and low.

First-class research dogs such as Moersey, Rita, and Hans are naturally fascinated by listening, and they just met a bosom friend.

However, for most of the researchers, although they are the elites selected from all over the world, the key is that among the chemistry dogs, they are the best at doing math problems, but they are not as good as Gu Xinyi, who was born in the mathematics department.Therefore, most people have changed from copying at a fast pen speed to taking pictures at a fast speed, completely kneeling under such a peak difficulty, and can only lie down and shout 666.

As Gu Xingyi wiped the whiteboard clean for the seventh time, many people's eyes were numb, and they were dizzy from a series of complicated calculations. Only the eyeballs rolled occasionally, vaguely implying that they were still alive.