Chapter 454 101K!
The world of mathematics has been surprisingly unsettled recently.
First Sir Attia and Riemann conjectured, and then Schultz and Mochizuki Shinichi.
Not long ago, Peter Schulz and Jacob Stix jointly published a paper, arguing that there is a problem with the proof of inequality (1.5) in Mochizuki's paper, and that small fixes do not The entire proof process cannot be saved.
Of course, from Mochizuki's point of view, there is no problem with the mistakes Schultz pointed out.
As for why, he will write a paper to explain.
Compared with Sir Attia's paper, which was not even an error, this debate is obviously more topical in the mathematical community.
After all, that 500-page paper, which is said to be understood by no more than twenty people in the world, caused considerable controversy as early as 12 years ago.
On one side is the founder of "Far Abelian Geometry" and "Intercosmic Theory", and the disciple of Mr. Faltings, and on the other side is the founder of "P.S Theory" and the new Fields Medal winner. The confrontation between them is quite like a fight between gods and gods, and the outsiders are dazzled.
Unfortunately, compared to number theory, algebraic geometry is not Lu Zhou's strong point, not to mention the unpopular among the unpopular - "Far Abelian Geometry".
ABC conjecture is not the direction that Lu Zhou is concerned about. After setting a label of attention on the progress of this matter, he did not pay attention to the specific situation, but put all his energy on the research of superconducting materials.
Just because the mathematical model is complete doesn't mean he doesn't need to be in the lab.
Any conclusions based on calculations are debatable. Computational materials can only guide experiments, not determine experimental results.
Not only to make results as soon as possible, but also to improve his theory with the experience gained from the experiment. No matter what the reason is, Lu Zhou cannot do without the laboratory.
In this way, time passed day by day, and soon it was the end of October.
In the scanning electron microscope room of the Frick Chemistry Laboratory, there was a small cheer.
As for why it is whispered.
Because the instruments here and the samples they observe are too "fragile", and the experiments they conduct are full of metaphysics, so that even a slight vibration may affect the final experimental results.
"It's N-type doping, we succeeded the professor!"
Clenching his fists, Connie excitedly looked at the images captured by the scanning electron microscope on the screen, and while saving the data, he said with joy, "I knew that as long as you join my project, the problems we are facing Problems are not problems at all!"
This sudden flattery was as unexpected as a sudden success. Lu Zhou felt a little embarrassed when he heard it, so he coughed lightly and said, "That's too exaggerated. What I provided is just a mathematical model."
Professor Chiric standing next to him was equally happy, but compared to Connie, he had seen a lot of storms, so he just joked with a smile.
"Don't be humble. Your mathematical model will undoubtedly come in handy. If you use the traditional method to find this sample, we will be thankful for the phased results before the end of the year."
Compared with Jinling Institute of Computational Materials and Sarot Laboratory, their work is mainly focused on theory, that is, to find the energy bands whose energy band structures are close to zero dispersion...
According to Lu Zhou's mathematical model, the positions of these two energy bands are finally determined in the experiment, on the negative and positive doping of the graphene Dirac point.
As for what is the use of this?
That can be of great use.
Finding the energy band with zero dispersion is equivalent to finding the Mott insulator they were looking for.
When they added a certain amount of electrons to this Mott insulator by applying a small gate voltage across the two-dimensional structured material, the individual electrons bonded with other electrons in the graphene, allowing them to pass through their former where it cannot flow.
During the whole process, Lu Zhou and the others continued to measure the resistance of the material while lowering the temperature of the material. They soon discovered that when the temperature dropped to 101K, the rate of resistance drop reached an abrupt peak, and the value of the resistance also sharply approached zero.
Clearly, this was what they were looking for.
It has to be admitted that sometimes theory and applied research do not conflict, especially in the field of materials science.
Of course, in addition to these easy-to-understand studies, there are many more esoteric theoretical work in it, and there are many problems that even Lu Zhou has not thought about how to explain.
For example, how to explain the bandgap width of the superlattice near 1.1°, for example, what order parameter should be used to describe the Mott insulator formed at this angle...
Maybe someone will do this more in-depth theoretical work in the future, or maybe their partners will be interested in doing this follow-up work.
In short, they changed the carrier concentration of the material by N-doping, and adjusted the overlapping angle of the modified two-dimensional material, and finally found the "half-filled" structure they were looking for in a new angle.
When the temperature reached 101K, the new material underwent a superconducting transition, as they imagined.
Although 101K is also not a high temperature, relatively speaking, there is no doubt that this is an amazing achievement.
Looking at Lu Zhou excitedly, Connie continued, "Professor, how should we name the new material?"
Lu Zhou's expression was a little subtle: "...Are you sure you want me to name it?"
To be honest, his ability to choose names has not been very good.
For this, he is quite self-aware.
However, the two obviously didn't understand him very well.
Not only Connie, but even Professor Chirick said with a smile: "Of course, this job should be done by you."
Lu Zhou smiled embarrassedly. After thinking about it for a moment, he said.
"In that case...then call it SG-1."
SG is the abbreviation of superconducting graphene (superconducting-graphene). Although it can also be named by the preparation method or compound type, it is easier to distinguish it from the functional name.
After all, considering the stacking method of two-dimensional materials and complex chemical processing methods, there are too many graphene materials that can be attributed to N-type doping...
Although he didn't have much confidence at the beginning, after thinking of the name, Lu Zhou was quite satisfied.
Of course, it's not enough for him to be satisfied. Naturally, the opinions of the other two collaborators have to be sought.
"What do you think of the name?"
Connie: ...
Chiric: ...
Seeing that the two of them stopped talking suddenly, Lu Zhou hesitated a little.
"……What's wrong?"
Connie and Professor Chiric looked at each other and made a helpless expression towards Lu Zhou.
"Nothing, SG-1 is just SG-1...just such an exciting discovery, I thought you'd think of a slightly cooler-sounding name."
Thinking about it carefully, this guy seems to have always been named in this style.
From modified PDMS to HCS-2...
If I knew it earlier, I shouldn't have given him the chance to be named.
Lu Zhou: "..."