Chapter 94: Actually, this is my topic
The only drawback is that this experiment ultimately failed to discover a superconductor at room temperature.
But no matter what, this is already a very successful scientific research project.
Not only have four new materials been discovered that can produce superconductivity at higher temperatures.
It also explains theoretically the reasons for this phenomenon.
After learning about Xu You's achievements, Yuan Dong felt a little envious.
The amount of data Yuan Dong usually measures is several times that of Xu You, but he still doesn't get such ideal results.
"Xu You, is this Teacher Qiao's project? It went really smoothly this time. We only measured a few dozen sets of data and obtained four superconducting materials. You know, I usually measure hundreds of sets of data, but I may not be able to get such an ideal set of data."
Yuan Dong still thought that Xu You, like himself, was just mechanically measuring the properties of various materials.
Little did they know that Xu You had already completed theoretical analysis and calculations before measuring.
"Senior, actually the topic is my own, but Teacher Qiao really helped me a lot."
"Of course, Teacher Qiao is very good to students... Wait, wait a minute, what did you say? Is this your own...experimental topic?"
For a moment, Yuan Dong did not immediately realize the meaning of Xu You's words.
It is already very rare for Xu You to be able to enter the laboratory at this age.
Yuan Dong thought that Xu You was just practicing through the measurement experiment.
Unexpectedly, this turned out to be Xu You’s own topic.
"Yes, I have done some theoretical analysis models before, speculating that these materials may exhibit superconducting properties at higher temperatures. Professor Qiao did not worry that my theory was wrong, and directly let me go ahead and do it."
At this moment, Yuan Dong's sense of superiority as a master of physics at Ji University completely collapsed.
I originally thought that everyone was just a research dog.
I repeat boring experiments every day, fantasizing that one day I will be able to produce ideal data.
But the fact is that Yuan Dong himself is the only scientific researcher.
Xu You is a real scientific research leader!
After completing this stage of the experiment and data processing.
Xu You once again communicated with Qiao Sen face to face.
"Teacher, it's not a surprising thing to reach a superconducting critical temperature of 100K. I've seen some laboratories achieve superconductivity at 250K."
250K, converted into Celsius temperature, is approximately equal to minus 23 degrees Celsius.
Judging from the temperature alone, it is already very close to room-temperature superconductivity.
Qiao Sen shook his head when he heard this.
"We can't just look at the superconducting critical temperature. Those so-called superconducting phenomena close to room temperature are all produced under extremely high pressure. The 250K you mentioned had a pressure of 170GPa. What does that mean? It's more than 100,000 times the standard atmospheric pressure, which is equivalent to half the pressure at the center of the earth."
"Teacher, such high pressure is also very difficult to achieve, right?"
"Yes, it is even more difficult to achieve than the low temperature close to absolute zero. It can be said that the room temperature superconductivity we need is, strictly speaking, normal pressure room temperature superconductivity. High temperature superconductivity obtained by high pressure cannot be regarded as high temperature superconductivity in the ideal sense. The original intention of room temperature superconductivity is to avoid harsh environments. Using high pressure to achieve high temperature superconductivity can be said to be a counter-productive thing. "
“But this also makes sense, right?”
"Of course, it is meaningful. It's just that temperature is not the only indicator to measure the value of superconductors. Just like the magic angle graphene superconductor that everyone is familiar with, although the superconducting temperature is only 1.7K, it can achieve superconductivity . This is its huge breakthrough."
Xu You is also very familiar with magic-angle graphene superconductivity.
When two parallel layers of graphene are stacked at a subtle angle of about 1.1°, a superconducting effect occurs.
Through his research on the superconducting properties of graphene, this young researcher has appeared in the journal Nature many times.
Next, Qiao Sen and Xu You discussed other issues on this topic and pointed out the next direction for Xu You.
"Your research results are very good now, but there is still a lot of work to do. At the beginning, because there are too many types of materials, we certainly can't measure too many properties for each material. But now that several superconducting materials have been screened out, we can continue to measure more dimensions for these materials."
"Teacher, in addition to perfect conductivity, we also need to verify the perfect diamagnetism of superconductors and the characteristics of flux quantization, right?"
"That's right. The industry's definition of superconductors is not limited to the property of complete conductivity. If you want to define superconductors more strictly, you need to continue to verify the other two properties."
Following Qiao Sen's advice, Xu You continued to conduct measurements in other dimensions on these fully conductive aluminum atom clusters.
The measurement process is long and boring, but fortunately, after a large number of measurements, experimental phenomena show that these aluminum atom clusters with complete conductivity also have the characteristics .
What remains to be done is to organize the data and write and translate the paper.
During this period, Xu Zhou also communicated with Xu You to understand the progress of Xu You's project.
"How was it, did everything turn out well?"
"Overall, it's going pretty smoothly. I'm currently writing a paper, and the translation is still a bit difficult."
"It's okay. This is only your second paper. You'll get used to it after writing more. Dad is pretty supportive, right? Without me, you might still be looking for someone to provide materials. Leave a place for me after the paper author. Is that not too much to ask?"
"That's awesome. I'll look for you if I need this kind of work in the future. But forget about adding your name. You should only be considered a material supplier."
"If that's what you mean, I can test the materials I make and write the papers myself in the future."
"Dad...you, you can't be immoral, can you?"
"Okay, I'm just kidding. Apart from me, our lab team has no idea what you want these materials for. And we don't have any measuring equipment or theoretical basis, so we can't write a paper. Don't worry ."
"Well, go ahead and get busy. I'll contact you if I have any questions."
After that, Xu You concentrated on his thesis work and, with the help of Qiao Sen and others, completed the review and proofreading of the thesis.
In the end, Qiao Sen was responsible for submitting the paper to the journal Nature.
This time, Xu You became the author of a paper in the PRL journal, and he finally felt more confident in his author introduction.
The initial review was passed quickly and smoothly, but further review will still require a long wait.
During this period, there was also new news about the "Sea Island" new generation quantum computer project.
The laboratories of Wang Xiangwu and Qiao Sen both received their own experimental research directions.
