Gao Xianlong
professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Honors and Titles : Program for New Century Excellent Talents in University
Gender : Male
Alma Mater : University of Science and Technology of China
Education Level : Graduate student graduate
Degree : Doctorate
Status : 在岗
School/Department : College of Mathematics, Physics and Information Engineering
Date of Employment : 2007-03-29
Discipline : physics
Business Address : Science Building 29#-429
Contact Information : 0579-82298507, 667810（short）
Email :
Hits :
First Author : 姚志东
Affiliation of Author(s): 数理与信息工程学院
Date of Publication : 2012-01-01
Document Type : 期刊
Journal : 物理学报
Issue : 第11期
Page Number : 449-454
ISSN : 1000-3290
Translation or Not : no
Key Words : 石墨烯；量子点；朗道能级；带隙
Abstract : 基于有限差分方法,数值求解了Dirac方程,研究了垂直磁场下的点缺陷扶手型石墨烯量子点的能谱结构,分析了尺寸大小对带隙的影响.与无磁场时具有一定带隙(带隙的大小与半径成反比)的量子点相比,在外加有限磁场下,能谱中出现朗道能级,最低朗道能级能量为零并与磁场强度无关,并且朗道能级的简并度随着磁场的增加而增加.进一步的计算表明,最低朗道能级的简并度与磁场成线性关系,与半径的平方成线性关系.本文工作对基于石墨烯量子点的器件设计具有一定的指导意义.
Born at Anhui Province, Feixi, Ph.D., Professor,
In 1998, Anhui University Department of Applied Physics, Theoretical Physics, Bachelor, Master,
In 2001, University of Science and Technology of China, Department of Astronomy and Applied Physics, Condensed matter physics, Ph.D
Research Interests:
1. Quantum properties of low-dimensional Fermi gas: Studying the exotic quantum phases due to the fermion species, pairing, the external potential, and the interaction;
2. Density functional theory of low-dimensioanl system;
Homogeneous low-dimensional systems are strictly solvable in many cases (eg using the Bethe-Ansatz technique, Bosonization, etc.), and for the inhomogeneous systems they are more complicated and can often be solved by using density functional theory. We study the applications of the density functional theory in the model system. Related examples can be found in the application of density functional theory in the inhomogeneous Hubbard model, non-uniform Lieb-Wu model, Anderson model and Bose-Fermi mixed system. The same idea can be used to deal with disordered problems, finite temperature effects, various dynamical problems;
3. Numerical study of low-dimensional strong correlation system: By means of strict diagonalization and numerical renormalization group, we discuss the ground state, especially the correlation function of low-dimensional systems;
4. Excitation properties of low-dimensional strongly correlation systems: studying low energy excitation such as spin-charge separation phenomenon, spin-drag effect due to the relative motion of different types of fermions, and the use of variational methods and local density approximation to solve the finite temperature, low energy excitation mode.
For students:
I am currently tutoring several graduate students for scientific research. At the same time, I am organizing and supervising a number of junior undergraduates for research and develop their research interests.
See details at http://physics.zjnu.edu.cn/2016/0303/c2480a26226/page.htm
Research team http://course.zjnu.cn/qm/gao/
