Chapter 493: 1 day is enough (Tuesday/Wednesday)

493 One Day Is Enough (23)
and also?
What is it?
Xu Mang showed a curious expression when he heard Xiaoman say the word'Ye', and asked, "You... someone in your company is studying fragile topology? This seems to be a matter of condensed matter physics, like you What is the fun of breaking the company?"
Yang Xiaoman gave a white glance, and was a little unconvinced, and said, "What is a broken company like ours? In the future, this kind of broken company will support your laboratory and research institute.
"..."
"What's the situation?" Xu Mang asked helplessly.
"Our company has an employee who graduated from Oxford University. He talked about this at noon today, boasting that his school has topological research capabilities that others can't match. No one in the world can be called the first, only them."
"Then I started to blow some fragile topology... even you can't surpass Oxford University in topology." Yang Xiaoman said angrily: "My mother, I was blown up, and then..."
"Fire him?"
"No...then I left." Yang Xiaoman said with a grin: "Somehow they are also masters of Oxford University. They are quite capable... fired, where can I find such a talent, and he knows if he Few secrets."
"Oh..."
Xu Mang was a bit dull,
I thought something big happened, it turned out to be this kind of thing.
"Ugh?"
"Are you angry?" Yang Xiaoman leaned into Xu Mang's ear and whispered softly: "You are worse than Oxford."
"what should I do then?"
"It's a school... One person drowned me with one saliva." Xu Mang turned his head and kissed Xiaoman's cheek, then sniffed, his face suddenly became a little serious, and said, "Did you change the perfume? "
"Yes indeed!"
"It's expensive... and a limited edition." Yang Xiaoman said, "How about it?"
Xu Mang feels that this perfume matches Xiaoman quite well. It has a faint fragrance, which matches her overall temperament very well, but... just let Xiaoman go, obviously not his own character, Xu Mang decided to take a good look .
"Uh..."
"Perfume is good, but not for people." Xu Mang frowned and said seriously.
Words fall,
Xu Mang felt a hint of cold, and the surrounding air had also condensed.
Yang Xiaoman: (￣︿￣)
What do you mean?
It’s been too long for me to dislike my old lady?
"Hey!"
"Do you want to die?" Yang Xiaoman gritted his teeth and said: "Don't think that I dare not beat you up, even if you are a great scientist, you have to listen to me at home, in the "Xu Yang Treaty" And your name and handprint!"
Fuck,
Are you still there?
Xu Mang shrank his head and said cautiously: "Don't talk nonsense... I don't even know the "Xu Yang Treaty"."
however,
Next second,
Yang Xiaoman took out a copy of paper from his bag. It was really a copy of the "Xu Yang Treaty."
"Humph!"
"Don't cook for this palace yet!"
Seeing Xu Mang being honest, Yang Xiaoman raised his arrogant little head and said, "Today I want to eat...scallion okra."
"Oh..."
for a long time,
The two sat at the dining table, looking at each other. Three dishes and one soup are the international conventions. Although Xiaoman’s appetite is very small, Xu Mang’s appetite is very big, and he almost never brings leftovers. During the meal, Yang Xiaoman asked about the adhesive.
"Dear..."
"The raw materials of the adhesive are too expensive. Do you know how much it costs every time I make a bottle of concentrated puree?" Yang Xiaoman said helplessly: "There is no BMW 7 Series."
"normal."
"You don't want to think about how many adhesives can be made from a bottle of concentrated puree... What else do you want to replace a BMW 7 series with a villa?" Xu Mang smiled bitterly: "Give others a little bit. We make all the money, and others will gossip."
"Ok."
"By the way... I plan to invest 10 million yuan in your student fund." Yang Xiaoman said: "Buy a reputation."
"whatever."
Xu Mang hardly bothered about this kind of thing. Anyway, ten million would be a drizzle for Xiaoman. This female capitalist is very rich now, and while engaging in financial harvesting, she uses adhesives to make money.
In short,
There are many kinds of routines.
...
The next day,
Xiaoman went to the company, while Xu Mang stayed at home thinking about fragile topology.
Mathematically,
Xu Mang failed and couldn't find any useful information at all. After that, he changed the direction of thinking and thought about the problem from the perspective of quantum state, using the most important discovery in condensed matter physics-the quantum Hall effect to get to the root of the problem.
The quantum Hall effect is found in two-dimensional conductive materials, but the similar effect is called topological insulation in three-dimensional systems, and the outer conductor is inner insulated.
This is a strong topology.
"Strong topology..."
Xu Mang suddenly fell into the memory, as if the strong topological properties originated from a certain weird property of the electronic quantum state. What is it?
Oh!
The electrons are not completely surrounding a single atom, but a part of the electrons are delocalized.
"Ugh?"
"If... some of the electrons of some materials are delocalized, but do not have strong topological properties, what will happen?" Xu Mang came up with a point of view. He does not know the research results of Oxford University for the time being, but it does not hinder the proposal. A new concept.
After calculation,
Xu Mang felt that this idea was quite reliable. Although it didn't work, he had a whole new mindset.
In Xu Mang's theory, the electronic state can ignore small disturbances, but it is not as robust as the strong topological state. A slight change in the material structure, such as adding a small amount of impurities, can become an ordinary material.
but...
It's useless, just fun.
"You have a new lawyer letter, please check it!"
The phone rang,
It was a call from Teacher Jiang Da Teng.
"Hey?"
"Ms. Teng...what do you want me to do?" Xu Mang asked with a smile.
"I know you must have forgotten, find you the college entrance examination papers of Zhejiang Province." Teacher Teng said with a smile: "I said...I hope you can write the math and science papers of Zhejiang Province this year, the difficulty... .You figure it out."
"what?"
"You still have to write a comprehensive paper?"
"Difficulty let me figure it out?" Xu Mang was stunned for a moment, and asked cautiously: "Teacher Teng...I'm a very vicious person. Aren't you afraid that the entire army of candidates from Zhejiang Province will be destroyed?"
"It's okay."
"At that time, you will be pushed out. Those media dare not report on you indiscriminately." Teacher Teng laughed.
I...
Okay,
Since you are not afraid of death, let me panic!
"it is good!"
"Mr. Teng...Don't blame me for making my shots too harsh." Xu Mang said seriously: "The difficulty of the question I gave is quite high. It tests the comprehensiveness of the students, especially for those so-called geniuses. serious."
"Fine!"
"I know your routine. Anyway, follow your instructions. You don't need to go to Jiangda University. Just send the paper out and send it to my mailbox. A scientist like you is a little embarrassed to let you come. "Teacher Teng said: "It's settled first, and I won't disturb you."
"Oh..."
Snapped,
hang up.
Xu Mang looked at the interrupted phone interface and sighed.
Sorry,
classmates,
Your leadership asked.
Thinking back to reality,
Xu Mang looked at the theory he had just written, feeling a little at a loss for a while.
"It seems..."
"I still can't get around graphene."
Opening the paper of the Oxford University research group, Xu Mang read the above carefully. According to their experimental report, Xu Mang suddenly felt something familiar. When he saw the data, he felt very strange...Who ever thought It is a topological state.
The Oxford University research team even directly correlated superconductivity, and believes that the superconductivity produced by the twisted double-layer graphene is related to the fragile topological state, which is a bit awesome.
Their second paper explained a situation. Fragile topology is more common than strong topology. At present, about a quarter of materials have strong topology, and research shows that almost all materials have electrons in weak topology states.
Then hundreds of thousands of suspected examples of fragile topological phenomena were found in the crystal database.
Suspected,
But it is not clear.
"Hey?"
"Professor Fan...can the laboratory spare me two days?" Xu Mang said with a smile, "Nothing...just let others know that I am still there."
...
The next day,
Fan Zhilong, professor of condensed matter physics at Fuda, came to the laboratory early, waiting for Xu Mang's arrival.
Yesterday he received a call and was told to borrow the laboratory. Faced with Xu Mang’s request, Fan Zhilong naturally agreed. Not to mention that he is the deputy director of the Physics Department. In terms of reputation alone, he should first consider his request. .
"Ouch?"
"Professor Fan is so early?" Xu Mang carried a bag of soy milk and steamed buns, came to the laboratory with a smile, and asked, "Have you had breakfast?"
"..."
"Are you usually quite leisurely?" Fan Zhilong said helplessly: "What is the situation this time? Are you arguing with others?"
"It's nothing..."
"Do you know the fragile topology?" Xu Mang asked.
Fan Zhilong was taken aback for a moment: "Of course I know that it belongs to the field of our condensed matter physics. It seems...some time ago a research team at Oxford University discovered this kind of magic in your double-layer twisted graphene. Topological state."
Fan Zhilong asked: "But this is currently only indirect evidence. Direct evidence is very difficult. Almost...you know, anyway, all the professors in the physics department of Fuda think it is impossible."
"is it?"
Xu Mang took a bite of the steamed buns and said calmly, "This is not necessarily...I think it is possible."
"..."
"You...you can't use the laboratory to study fragile topological states, right?" Fan Zhilong said surprisedly: "This is different from strong topologies. Strong topologies will show measurable phenomena, while fragile topological effects are very weak. , So weak that it is almost negligible."
"The Oxford research team only found indirect evidence, suspected of fragile topology." Fan Zhilong said: "Have you considered it clearly?"
"In fact, this is not a very difficult question. UU reading www.uukanshu.com" Xu Mang smiled: "The Oxford University research team has discovered it, but didn't notice it, just like when I discovered double-layer twisted graphene Able to superconduct, but did not notice the suspected topological state."
Fan Zhilong didn't speak. Since Xu Mang felt that there was no problem, there was really no problem. After all... his name was Xu Mang, and his name was full of miracles.
"Is two days enough?"
"How about I squeeze some time?" Fan Zhilong asked, "How about four days?"
Xu Mang took a sip of soy milk, raised his head and smiled: "One day is enough."
Fan Zhilong:? ? ?
......
At this point, there is a voice in my mind... Is the game not fun? ? ? Failed to resist the temptation...囧
(End of this chapter)