In an office,

Several intern researchers were chatting, or to be precise, they were talking about Xu Mang.

"Do you think Professor Xu will succeed?"

"How could it be that you don't know how difficult it is? You have found many professors from famous schools and talented students, but you are still at a loss. I don't believe that Professor Xu alone can play any role."

"I also feel that there are so many people who can't do anything. It's okay if Professor Xu comes here?"

"I think"

At this time,

A girl in the office said: "Think about why Director Cao made such an announcement. If Professor Xu hadn't made any breakthroughs, would a utilitarian person like Director Cao have done such a thing?"

""

""

""

Several people were silent. According to Director Cao's personality, this was indeed the case.

Could it be

What latest progress has Professor Xu made?

Impossible?

Is Professor Xu really that amazing?

soon,

The incident between Xu Mang and Graphene spread throughout the research institute. In addition, many people did not see Xu Mang and his girlfriend appear at noon, so the rumor became a bit excessive.

soon,

These rumors reached the ears of Wang Xiong and Cao Junhui.

Faced with the emergence of such rumors, the two of them were helpless. However, at this time, they could not control it, otherwise things would get worse.

"well"

"I don't know what happened to Professor Xu." Wang Xiong sat in Cao Junhui's office and said helplessly: "I couldn't see him at noon. Now the entire institute is paying attention to him, but he didn't show up.

Lock yourself in the laboratory."

"Perhaps only such an attitude can lead to success." Cao Junhui said with a smile: "A focused attitude."

at the same time,

In the laboratory.

Xu Mang and Yang Xiaoman continued to adjust the temperature to the extreme. At this time, it had reached 4k, which is minus two hundred and sixty-nine point fifteen degrees below zero.

"Hello!"

"It's about to reach its limit." Yang Xiaoman said worriedly: "Will this equipment explode?"

"Are you crazy?"

"How could this machine explode?" Xu Mang said, "It will drop by another 0.1k."

When the temperature continues to drop,

Xu Mang's expression gradually became grim, his eyes were fixed on the data on the display screen, and his fingers were continuously changing the carrier concentration in the graphene.

According to common sense,

If the carrier energy band is fully full, it will not conduct electricity. If the energy band is half full, it will conduct electricity. However, in the process of continuous change, Xu Mang found that in the ns region, if it is filled, the conductivity is zero, that is, insulation is produced, and ns/2

The area fills up and another insulation appears.

This is exactly incompatible with the insulator of the energy band theory, that is, the Mott insulator.

Mott insulator is the parent material of high temperature superconducting materials.

It seems

It shouldn't be a big problem, maybe the temperature is not enough.

"Hello!"

"Are you going to go down again?" Yang Xiaoman asked.

"Continue!" Xu Mang shouted.

As the temperature continues to drop,

Xu Mang observed that in the electronic state phase diagram, the SC region gradually took on the shape of a superconducting parabola. It was not very obvious, but it had a rough prototype, which was almost the same as the electronic state phase diagram of high-temperature superconductors.

"Hello!"

"It's already reached 2k!" Yang Xiaoman said with fear on his face: "Will it really explode?"

"Won't!"

"Keep falling!" Xu Mang said firmly, he was about to see the dawn of hope.

have no choice,

Yang Xiaoman could only listen to Xu Mang. Anyway, the explosion would make them a pair of desperate mandarin ducks.

When the temperature dropped to 1.7k, Xu Mang suddenly shouted stop.

at this time,

Xu Mang saw several pictures that were simply stunningly beautiful.

“It’s amazing!”

"I'm so awesome!" Xu Mang was constantly controlling the carrier concentration while looking at the monitor.

Analyzing from data,

The superconductivity of double-layer graphene with superconducting properties is affected by temperature, and when the external magnetic field is 8t, the Mott insulating state disappears, thus returning to metallic conductivity, that is, the superconductivity of double-layer graphene with superconducting properties is affected by the magnetic field.

Influence.

Actually simulated the physical phenomenon of high-temperature superconductivity

Because Mott insulator is affected by temperature, it will return to its metallic form. At the same time, when the magnetic field is 4t, it will regain conductivity.

Successful

but,

What is the principle behind this?

Why can twisted double-layer graphene achieve superconductivity?

What exactly is going on inside it?

Faced with these mysteries,
Chapter completed!