On March 5, 20 18, Nature published important research results in the form of back-to-back long articles on its website, with a third article attached as a comment on the above results.
Discovery of graphene superconductivity at MIT
Van der Waals heterostructure is a vertical stack of binary building units, which can realize more engineering manipulation on the basis of rich functions of two-dimensional materials. One direction is to control the electronic structure of van der Waals heterojunction by controlling the interlaminar torsion angle.
Jalilo Herrero and Cao Yuan of MIT found that the electrical behavior in stacked double-layer graphene is very sensitive to the arrangement of atoms, which affects the electron movement between layers. For physicists, electrical behavior is usually dominated by energy. In this study, the energy related to the motion of electrons between atoms in single-layer graphene is in the order of eV, while the energy related to the motion of electrons between layers is in the order of several hundred meV at most.
The above research results come from the latest two issues of Nature published on March 5th, and the correspondent is Professor Pablo Jalillo-herrero of Massachusetts Institute of Technology (MIT). Pablo Jalillo-Herrero and Cao Yuan discovered new electronic states in double-layer graphene with twisted magic angles, which can simply realize the transformation from insulators to superconductors, opening the door to the study of unconventional superconductors.
In addition to these two articles, Nature is accompanied by comments by Eugene J. Mele.
Pablo Harrillo-herrero (left) and Cao Yuan (right)
The first author of the article is a small fresh meat
It is worth noting that Cao, the first author of these two natural papers and a doctoral student at MIT, originally came from China. I am only 2 1 year-old this year, and I graduated from the famous juvenile class of China University of Science and Technology.
Cao Yuan was born in 1996, and his native place is Chengdu, Sichuan. In 20 10, 14-year-old Cao Yuan was admitted to the world-renowned China University of Science and Technology College from Shenzhen Hua Yao Experimental School, and was selected as "Yan Jici Physics Talents Class".
Since middle school, Cao Yingyuan has benefited from "extraordinary education".
Cao Yuan went to Hua Yao Experimental School in 2007, and Zhu Yuan was the vice president in charge of extraordinary education. The latter has taught in the juvenile class of China University of Science and Technology for more than 20 years. It took Cao Yuan three years to finish the sixth grade, junior high school and senior high school courses. The total score of college entrance examination is 669 in science.
20 14 Cao won Guo Moruo Scholarship from China University of Science and Technology.
The Chinese University of Science and Technology, founded by genius, is fiercely competitive, and the juvenile class faces a large number of killers. But Cao Yingyuan is like a duck to water.
Cao Yuan met Professor Ding Zejun, a "terrible killer", in the course of computational physics. Ding Johnson recalled Cao Yuan in the New Alumni Foundation, saying that Cao Yuan was "a very smart guy! I published an article on the research results of this subject in J. MAG, a course of computational physics. Margo. Material 355 (20 14) 93-99. It didn't take long, but it was finished in a winter vacation. "
Professor from the School of Physics of the University of Science and Technology of China has also confirmed that "this is a baby mixed in my laboratory". I once recalled that "(undergraduate) also sent an article on PRB theory in our laboratory. At that time, I thought he was too powerful. "
A junior who is familiar with Cao Yingyuan said: He is so strong that he was once a legend of HKUST.