Chapter 785

Xu mang suddenly felt a little helpless, perhaps worried that it was unnecessary. Although the quantum Research Institute under Fermi laboratory successfully proved Klein tunneling phenomenon with graphene, the evidence is still insufficient. If this kind of evidence is used to explain Klein tunneling, other people can accept it or not, and they will never pass this level.

According to the report of the quantum Institute under Fermilab, they studied the tunneling properties of strained graphene monolayers driven by a vertical magnetic field, and obtained the transmittance through a magnetic barrier through the transfer matrix.

It is found that in small angle scattering, unlike Klein tunneling in the electric barrier, the magnetic field can bind electrons to a strained magnetic barrier. As long as the incident energy is not large, the existence of strain can significantly increase the directional transmittance.

When the injected energy is large, the strain effect is completely removed, so that the strained graphene and the ideal graphene have almost the same tunneling properties.

In general,

this is the tunneling characteristic of graphene in magnetic field under stress.

Sorry,

I can't accept such evidence!

Xu mang is full of disdain for this, obviously... This is the performance of eager for quick success and instant benefit. It is estimated that only knowing his own existence can accelerate the speed of research and lead to such problems. There is no conclusive evidence.

"Professor Xu?"

"Do you have any good ideas?" The young graduate student carefully said: "physicists in the western world are very happy about this. They think that you are no longer the invincible person in the field of physics. Now you can be defeated."

Xu mang was stunned for a moment and asked curiously, "this... Does this mean that you can defeat me? It's the tunneling properties of graphene under stress in a magnetic field... What's the big deal? Whether others want to admit it or not, I don't admit that this evidence proves Klein tunneling. "

"But..." said the young graduate student, "that's what the world thinks, and we haven't even found the right material. It's too hard to surpass."

"Who said that?"

"I don't agree." Xu said solemnly, "it's just to find the right topological insulator material. I'm kidding... There's no so-called difficulty in my dictionary. Once my eyes are closed, it's open!"

"..."

after hearing Xu Mang's words, the young graduate student gave a bitter smile. No one can boast about this bull force, but only Professor Xu mang can, there is no way... He is good at making the bull force come true, but just now the bull force is a little over hyped.

"Cough!"

"Professor Xu Mang, how sure are you?" The graduate student asked cautiously.

"Sure?"

"120 percent." Xu said calmly: "you go back now, by the way, don't have any worries. I'm here for everything... Don't be afraid. How about the Research Report on the mechanism of supermassive black holes?"

"The impact is extraordinary."

"It has passed the" nature discipline. " The graduate student excitedly said: "we don't know why it is so fast, maybe it's your reason, but... We're all on the front page of the school."

"Oh..."

"keep trying!" Xu mang said casually, then opened the computer, continued: "when you go out, help me to bring the door."

After a while,

there was Xu mang left in the office. Now he is not relaxed. People all over the world are reveling in themselves, and the suitable topological insulator material is far away. What should we do?

Xu mang fell into silence. According to the previous two days' research, this topological insulator material is basically a hybrid material, that is, the interior is insulator, but the surface is metal, and under certain conditions, the surface can be transformed into a superconducting material.

This greatly increased the difficulty. At first, samarium hexaborate was selected because it met the condition that the inner part of the material was insulator, but the surface was metal, and the surface allowed the electrons to move freely. At the same time, the direction of electron movement was locked in an intrinsic quantum property called spin.

However, there is no condition to realize Klein tunnel on its surface. Either a new topological insulator material or a special processing of samarium hexaborate material is needed. Each choice is very difficult, almost all of which is an impasse without turning back.

However,...

Xu mang preferred the second choice, and made special processing for samarium hexaborate.

"How does samarium hexaborate... How can it be transformed into a superconductor?" Xu mang can't think of a way to break his head. It's not human that can solve this problem. It's no less difficult to turn a topological insulator material into a superconducting material, which is no less difficult than turning a small man into a tall one.

"My God

"How difficult it is Xu sighed blankly. If you want to succeed in this field, you need to be proficient in topological physics, condensed matter physics, spectroscopy and theoretical theory at the same time, but... He has clearly reached the top, how can he still not solve the problem."Hello?"

"Director Fang?"

"What can I do for you?" Xu mang received a call from Fang Jun, director of Physics Department of Fuda University. He said feebly, "I'm in despair now. With a network language... Baby's heart, but if the baby doesn't say it, I'm too miserable."

"..."

"is it about the fact that the quantum Institute under Fermi laboratory has successfully proved Klein tunneling with graphene?" Fang Jun said calmly: "it's normal to fail once in a while. After all, people can't go on smoothly all the time."

It's true to say so, but I'm not satisfied with it.

"Speaking of director Fang?"

"You didn't come to me just to enlighten me, did you?" Xu mang asked curiously, "I'm a world-famous scientist now. I'll have you on equal footing in the second half of the year. Then we'll all be academicians of the Academy of Sciences."

"You kid..."

"forget it." Fang Jun said with a bitter smile: "the headmaster asked me to ask you, do you still need graduate students to do research there?"

Huh?

This... Really think I'm a training institution?

Come if you want?

"Cough!"

"Not for the time being." Xu mang said with a smile: "by the way, in the future, I will charge double fees, eat and drink mine, use mine, and I will also give them wages... Director Fang, in the future, each graduate student who comes to my internship every year will charge 500000, and the school will bear half of the research project."

"..."

"this matter... You can tell the headmaster in person. If he agrees, I have no opinion." Fang Jun said with a smile: "that way... Hang up first."

Bang!

Just hang up.

Xu mang called his second grandfather in a hurry to ask about raising money and spreading research funds, not to mention... For a while, he didn't know how to open his mouth. When "Du" was heard, he hung up directly. Xu mang needed to organize his language.

Two minutes later,

Xu mang called again, and soon the urgent call was made.

"Hello?"

"Hey, hey... Second grandfather?" Xu mang asked with a smile: "how are you recently? Can we carry it or not

"..."

"I was in good health, but you gave me a call, and now I have a little cerebral congestion." The second grandfather didn't get angry and said, "did you think of any bad idea?"

"Cough!"

"Second grandfather... Am I such a person?" Xu mang carefully said: "what? I'm here to discuss with you. As for the graduate students who come to my Institute for internship, I think... I'll give money later. I want money, but this time I'll just try water."

As for the matter of giving money, the second grandfather knew that he was quite puzzled before. Xu mang didn't call to pay for the money. Now the phone call finally came.

"Well!"

"I know about it." The second grandfather nodded.

"What..."

"second grandfather, I think you are wrong." Xu mang said seriously: "I mean to add money in the future. Don't be angry. Don't be angry... Listen to my explanation... Second grandfather, you can understand the situation in my family. Xiaoman is such a black sheep. I don't make any money to support my family. I'm afraid that we will starve to death in the future."

Hearing Xu Mang's words, the second grandfather almost didn't get mad. This guy really opened his mouth and couldn't help laughing and swearing: "you boy... I'm your second grandfather. I don't know the situation of your family yet? How much did your wife earn last year? Your father-in-law told me

Ouch...

this NIMA,

Xu mang was a little embarrassed and said with a smile, "well... How about the matter of increasing money?"

"Don't think about it!"

Bang!

I just hung up.

Xu mang was stunned for a moment, thinking that he had a phantom hearing. After repeatedly confirming, he was hung up by his second grandfather.

Oh...

prick, I can't say, it's disturbing.

Xu mang was so angry that she couldn't call Xiaoman and let her communicate with her second grandfather. He seemed to love Xiaoman more than he did. Basically, there was no problem, but unfortunately, Xiaoman refused.

Forget it,

let's talk about it later and solve the problem first.

Sitting in the office, cross legged, not to mention... In the confusion, Xu mang thought of Xu Yang structural formula.

Perhaps,

we can get a little inspiration by using Xu Yang structural formula.

After recalculating the crystal structure of samarium hexaborate, Xu mang seems to have found something extraordinary. He found a material with the same crystal structure as samarium hexaborate, called yttrium hexaborate. It has good chemical stability, electrical and magnetic properties and other excellent foreign material and electrical properties."Ah?"

"No way Xu Mang's brain has a short circuit. Which material is used as the base material?

Finally,

Xu mang made two attempts, covering the surface of yb6 with a layer of sm6 film, and the other scheme was to cover the surface of sm6 with a layer of Yb 6 film. Then, according to the theoretical calculation, two different results were obtained.

Finally,

Xu mang chose to cover the surface of yttrium hexaborate with a layer of samarium hexaborate film.

In the theoretical calculation, when the whole assembly is cooled to several degrees above absolute zero, Yb 6 becomes a superconductor. Due to the proximity of its crystal structure, the metal surface of samarium hexaborate also becomes superconductor.

In this way, it is in line with all the pre-set concepts.

But...

it's a little expensive!

Xu mang thinks about it. It's time for Yang Xiaoman, a vampire, to vomit blood!

(° ー″) confused ~

(ノへへへへへへへへへへへへへへへへへ!

"Alas..."

"it seems that there will be another bloodbath tonight!"

......

www.novelhall.com , the fastest update of the webnovel!