well?

etc!

Xu Mang suddenly realized that he seemed to have forgotten a certain step, and it might be this key step!

Strong interaction between electrons,

That is, the highly entangled state caused by the mutual repulsion between electrons shows strong interaction between electrons in all high-temperature superconductors, which is the key to achieving superconductivity.

Immediately afterwards,

Yang Xiaoman found a previous paper by a physicist. Although this paper was prophetic, it provided a direction for the two people's work. The paper said that when the rotation angle of double-layer graphene changes, electrons may be generated.

interaction.

"Fool."

"If two layers of hexagonal honeycomb lattice graphene are rotated at an angle, wouldn't they produce a ripple like a flickering effect?" Yang Xiaoman pointed to the display: "Look, is this Moore?"

Pattern?"

"nonsense!"

"This is the inevitable effect when two geometrically regular patterns overlap."

As soon as he finished speaking,

Only then did Xu Mang react.

Angle rotation produces not only moiré patterns, but also expanded cells.

after,

Through the design of the model, Xu Mang discovered that when the rotation angle of the two layers of graphene changes, the ripples between light and dark can be seen very clearly, and the smallest repeating unit of the ripple is in the shape of a rhombus.

Not only that,

Xu Mang also found another strange feature. The bright parts are arranged as aa, and the darker parts are arranged as ab or ba. Such an arrangement does not exactly form the concept of peaks and troughs.

"Xiaoman!"

"Are there any relevant calculation equations in that prediction paper?" Xu Mang asked.

"Let me see"

"Yes!" Yang Xiaoman said.

"Give me."

"oh"

Xu Mang got the printed paper and checked it over and over again, especially the calculation part. According to the calculation results of this paper, when two layers of graphene are rotated, the Fermi speed may change.

but

Xu Mang felt that there was something wrong with the calculation.

It seems wrong.

Because according to the above calculation results, it is impossible to create an energy gap in the Dirac cone of two-dimensional graphene and allow its Fermi velocity to be readjusted.

"Holy shit!"

"This is a beautiful mistake." Xu Mang sighed and said to Xiaoman: "Xiaoman, we may be under a lot of pressure in the next two days."

"ah?"

"Why?" Yang Xiaoman pouted and said unhappily: "I came to Ning City to enjoy myself, but now I feel like I have become your tool."

Xu Mang smiled and said: "You are the one who insists on coming, and you can't persuade me to stop. What can you do? Forget it, let me do it alone, because it all involves calculations of quantum mechanics, and you may not understand it.

."

"Pooh!"

"Why can't you understand?" Yang Xiaoman was unconvinced: "What is it?"

"The Dirac equation of quantum mechanics." Xu Mang asked with a smile: "This is a relativistic quantum mechanical equation about electrons."

""

Listening to Xu Mang's explanation, Yang Xiaoman's face was full of confusion. What is all this?

Xu Mang thought for a moment and said to Xiaoman: "Really, you can rest tomorrow, I can do it by myself."

"don't want!"

"I want to accompany you." Yang Xiaoman said stubbornly: "Don't try to drive me away, or I'll beat you to death!"

Xu Mang:(￣△￣；)

final,

Yang Xiaoman still stayed with Xu Mang and became a tool man.

Of course she doesn't have to do anything.

make a mascot,

furnishings,

vase.

In the following time, Yang Xiaoman watched Xu Mang continue to calculate and write equations one after another. However, he could not understand these equations and did not even know the meaning of each symbol on them.

"Huh? What is this?"

"Energy gap equation."

"Then what is this?"

"Solution expansion of the positive energy of the Dirac electron."

""

Yang Xiaoman fell silent.

After feeling Xiaoman's emotional change, Xu Mang put down the pen in his hand and asked with a smile: "What's wrong?"

"I feel like an idiot." Yang Xiaoman pouted and said helplessly: "I can't understand what you wrote. When we first met, you were so stupid. Now"

Xu Mang patted his thigh and said with a smile on his face: "Sit down and I will teach you the relativistic quantum mechanical equations of electron motion in quantum mechanics."

Just a few minutes after sitting down, Yang Xiaoman was wrapped in happiness, and the door of the laboratory was opened.
Chapter completed!