night

Xu Mang stayed in Xiao Man's dormitory, after all, he was going to accompany her to practice tomorrow, and the car that Xiao Man used to practice was also very luxurious, and he used the Mercedes-Benz at home to practice, although he said... It's really not bad for money, but in Xu Mang's impression, he should choose less than 100,000 yuan for car training.

"Huh?"

"Can we change it?" Xu Mang said helplessly: "Everyone else is Santana 2000 or Santana 3000 to practice, you... You actually use Daben S600 to practice driving, this is too much, you can't show off your wealth so much, right?"

"But..."

"But this one is the cheapest in the house. Yang Xiaoman said weakly: "Why don't you go and pick up one tomorrow?"

Xu Mang: Embarrassed

I'm sorry

It's me who is vulgar... The happiness of rich people is unimaginable.

"Forget it... Anyway, Dad has a lot of money, so it doesn't matter if he hits one. Xu Mang sighed, but deep down in his heart he was rejecting Xiao Man's behavior of practicing the car, but this car does have to be practiced, otherwise it will be difficult to go out.

"Big fool?"

"What are you doing?" Yang Xiaoman said glutinously while lying on the bed, "I'm a little cold..."

"?"

"How many months has it been?" Xu Mang glanced back at Xiao Man, and said angrily: "Can you keep it cold like this?" Hurry up and put your legs in the quilt and expose them to whom?"

Yang Xiaoman is so angry,

It's weird... Sometimes this neurotic is so gentle that it can melt you, but sometimes it's a puddle of mud that can't hold up the wall at all.

Lady I've already made it clear, right?

I can't see it.

Alas... My heart is so tired,

It feels like I won't love anymore.

"Are you avoiding me?" Yang Xiaoman thought of something, hugged Xu Mang from behind in his pajamas, rested his head on his shoulder, and said softly: "I think you have an opinion about me... Or maybe you're running away from something. ”

“...”

"Don't think crooked. Xu Mang smiled and said, "Actually, I'm thinking about a question. ”

"Huh?"

"Tell me, if I can help you, mother. Yang Xiaoman turned on the air conditioner, adjusted the temperature to thirty-two degrees, and then moved a chair to sit beside Xu Mang, and said curiously: "What is the problem?"

"About the superconductivity of graphene. Xu Mang said.

Yang Xiaoman was stunned for a moment, his face full of confusion: "Did you and I discover the superconductivity of graphene not long ago? Is there a problem?"

"It's not. ”

"I'm looking for a new way of superconducting. Xu Mang said seriously: "Add a little new idea to the field of graphene superconductivity." ”

"Then you..."

"What are you going to do?" asked Xiao Man.

"Uh..."

"On top of the original two layers, add another layer of graphene. Xu Mang said seriously: "In the morning, I built a model, and through the model, I found that the stacking of three layers of graphene may have an impact on the band structure. ”

"And the change in the band structure happens to have an impact on the electronic and optical properties, so... I'm thinking about how to apply it to superconductivity. After Xu Mang finished speaking, he couldn't help wiping the sweat on his forehead.

Yang Xiaoman frowned and said cautiously: "Alas... What if it's completely unrelated?"

Hearing Yang Xiaoman's words, Xu Mang was stunned for a moment.

Not to mention...

I didn't think about that.

"Stupid!"

"I remember you said earlier that superconductors are found in doped Mott insulators described in the Hubbard model. Yang Xiaoman said: "You might as well try to start here, maybe it can give you a new idea." ”

“...”

it!

Is this Xiao Man?

How can she remember everything?

Xu Mang has a new view of Yang Xiaoman, what she said is just the content of a casual sentence she mentioned before the Chinese New Year.

"Xiao Man?"

"How do you remember so much?" asked Xu Mang.

"Because that's what you said, I remember it very well. Yang Xiaoman smiled: "Anyway... Can you take me with you when you go to Jiang University?"

“...”

"I'm on a business trip. Xu Mang said helplessly: "I didn't go to Jiang University to play." ”

"Oh..."Yang Xiaoman nodded and did not speak.

however

This situation made Xu Mang a little flustered, since his cousin talked nonsense to Xiao Man, Xiao Man has become a little different from before, although he is not very willful, but he lacks a little feeling, this is just an outsider with Xiao Man's body.

"Actually..."

"It's okay to go. Xu Mang smiled and said, "I'm used to you being by my side." ”

"Humph!"

"I don't want to go yet. Yang Xiaoman glanced at him and said silently: "Anyway... Are you hot? I see you're sweating on your forehead. ”

Not to mention,

After Xiao Man's reminder, he found that this room was indeed very hot.

A feeling of heat.

"Come!"

"I'll help you take off your coat. Xiao Man silently pulled off Xu Mang's coat, threw it on the table, and then sat beside him obediently.

Followed by

Xu Mang walked into Xiao Man's trap step by step, and when all this happened, Xu Mang suddenly realized, and felt remorseful, and couldn't help but sigh... A woman who often uses brute force, and suddenly uses her intelligence, is simply terrifying to the point of unimaginable.

...

Following

Yang Xiaoman sat in the driver's seat with a cushion, this was the first time she touched the steering wheel after getting her driver's license, no... It should be the second time.

"Stupid?"

"The brake on the left and the accelerator on the right, right?" Yang Xiaoman asked.

“...”

"Yes!" Xu Mang said expressionlessly: "I know you're scared now, but we don't panic... This is the first step on your road to driving, hurry up!"

With the press of the start button,

The V12 engine let out a low roar.

The car drove a little slowly,

Fortunately, it is relatively stable, there is no hairy phenomenon, Yang Xiaoman can be like this, it is really good, Xu Mang also gave high praise for this, and constantly praised her for being smart and cute along the way.

"Alright... The road conditions are almost familiar, so can we speed up?" asked Xu Mang.

"Oh..."

Tap the throttle,

At this time, Daben finally caught up with the bicycle in front, fortunately there was no one on this section of the road, otherwise he might have been scolded to death by the person behind him.

Gradually,

Yang Xiaoman's driving skills began to consolidate, after all, he didn't learn in vain in driving school, but he didn't drive a vehicle for a long time, which caused Xiaoman's skills to be a little rusty, and the speed of the car became faster and faster, and in a place where no one was around, the speed was as high as sixty.

But

Xu Mang's maximum speed for Xiao Man is only eighty, after all, in a place like the magic capital, being able to drive to eighty is considered a drag race, and most of them are stuck in traffic jams.

Seeing that the technology is starting to be robust,

Xu Mang's mind began to slipper, thinking about the Mott insulator that Xiao Man mentioned yesterday.

In fact

Yesterday Xiaoman said that it was not accurate enough, Mott insulator and band structure are related, from the band structure, it should be able to conduct electricity, but it is an insulator. It is insulating because of the strong electrostatic action between the electrons.

Take the double-layer graphene superconductivity discovered by himself and Xiao Man together, if two stacks of graphene are stacked together and rotated at a slight angle, it will exhibit an insulating effect similar to Mott's insulator, with all electrons carrying the same energy regardless of momentum.

However, after strengthening the voltage and adding a small amount of electrons, at a certain level, the electrons can break the insulation state and flow without resistance, becoming superconductors.

So

There is no problem with my own assumption, as long as I know whether the superposition of the three layers of graphene will have an impact on the band structure, so as to form a Mott insulator, then the superconductivity of the three layers of graphene will also be revealed.

"The system... Can three-layer graphene be superconducted?"

[After system identification, whether the three-layer graphene produces superconductivity exchange value: 10000 (physical skills)]

It's a pit,

This dog system is even worse than a white cat.

Glancing at the skill value, Xu Mang silently chose to pay.

This move is like buying a peace of mind.

【Yes】

Seeing the answer of the system, Xu Mang is more sure of his choice, as long as it is proved that the superposition of three layers can have an impact on the band structure, superconductivity is as simple as probing and extracting things, and the rest is a matter of calculation.

But

You also need a theoretical proof.

At this time, Xu Mang logged in to the natural official through his mobile phone, found his paper, and read it carefully over and over again, he hoped to derive the theory of two-layer graphene to three-layer graphene, but in the end he failed.

Of course

It can't be said to be a complete failure, but there are similarities in it.

"it!"

"This paper has such a high number of citations?" Xu Mang returned to the interface, and found that his paper with Xiao Man had been cited a lot, and he couldn't help exclaiming: "Xiao Man... We're famous in condensed matter physics!"

Boom!

With a loud bang,

Xu Mang's head hit the ejected airbag, and the huge impact almost knocked him unconscious.

Yikes!

A puff of white smoke came out of the hood, and the telephone pole was knocked crooked...

“...”

“...”

"Xiao Man... You have nothing to do, right?" Xu Mang came back to his senses and said to Xiao Man on the side with a frightened face: "It's okay, it's okay... The car hits and hits, as long as the person is okay. ”

Yang Xiaoman, who came back to his senses, glared at Xu Mang, the anger in his heart, and yelled at Xu Mang: "Hey, old lady, when I was driving, can you not be startled, so scared that I didn't grasp the steering wheel steadily, and rushed directly to the flower bed on the side of the road, fortunately, there was no one here." ”

Hearing Xiao Man's words, Xu Mang smiled awkwardly, he was so excited just now that he forgot that Xiao Man was driving, and he didn't react until the airbag was deployed.

At last

The car was pulled and sent to the local 4S store, Xu Mang and Xiao Man lost the street lamp money in the relevant department, and the two returned to school. In the end, Xu Mang begged Yang Xiaoman to go to Jiangda with him, which turned yin into sunshine.

Following

Xu Mang drove his baby car and drove Yang Xiaoman to Jiangda.

After arriving at Jiang University, he directly found Director Lin, and then under his leadership, the two came to the laboratory.

"You can use this device, right?" asked Director Lin.

"No, it won't. ”

“...”

"I'll tell you about it. ”

subsequently

Director Lin operated this extremely complex equipment in person.

"Look... This is a spatial analysis of the intensity integral of Fermi energy measured with this device. ”

"This is the theoretical π band of the material in the R-K-M direction in the tight bonding model. ”

"Here it is..."

Xu Mang: (°ー°〃)

What is he saying?

Why are there so many function keys on the software?

Why are there so many buttons on my device?

Long

Director Lin asked with a serious face, "Got it?"

“...”

"Understood... Understood!" Xu Mang nodded awkwardly and politely.

"It's good to understand, I'll go first, there's a little more to do. ”

Words fall,

Director Lin left the laboratory.

"Xiao Man?"

"Huh?"

"Did you understand just now?"

"Got it, it's very simple, fools will!"

Xu Mang: Σ(°△°|||) ︴

......