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报告题目： |
A New Approach for the Mesoscopic and Macroscopic Modeling of Quantum Systems: Application in 2D Materials |
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报告人： |
袁声军 |
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报告人单位： |
Institute for Molecules and Materials, Radboud University |
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报告时间： |
4月12日9:30 |
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报告地点： |
科技楼北楼410 |
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报告摘要： |
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The deep understanding of the physical properties of 2D materials requires the study crossing over from microscopic to macroscopic. New quantum phenomena emerge at the mesoscopic and macroscopic level, such as interference effects, quantum confinement effects, and charging effects. For structures with scales larger than 100 nanometers, the ab initio calculations are unfeasible. Tight-binding propagation methods (TBPMs) are developed for the modeling of systems range from mesoscopic to macroscopic level, and applied for the calculations of electronic, transport and optical properties. We will give a brief introduction of the methods, and show their applications together with our recent progresses in the study of 2D materials, heterostructures and superstructures, such as the many-body enhancement of insulating states at the additional Dirac points in graphene-hBN heterostructures , the modification of optical gap in fluorographene due to (super)structure disorders, effects of disorder in the electronic and optical properties of semiconducting black phosphorus and transition metal dichalcogenides, a new tight-binding model parametrization for black phosphorus with an arbitrary number of layers , quantum Hall effects in biased black phosphorus, and conductance fluctuations in novel 2D fractals. We will also show how to combine the TBPMs with other well-known numerical methods such as DFT-GW and molecular dynamics, and discuss briefly the extension to many-body problem.
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报告人简介： |
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Education （教育）
PhD in computational physics, University of Groningen, the Netherlands, 2008.
M.Sc. in physics, University of Siegen, Germany, 2003.
B.Sc. in physics, Zhejiang University, China, 2001.
Awards （获奖）
STW Take-off Grant Award, 2016 （荷兰政府科技部 Take-off 奖).
Chinese Government Award for Outstanding Self-Financed Students Abroad, 2007 (国家优秀自费留学生奖).
German Academic Exchange Service (DAAD) Scholarship, 2001-2003 (德意 志学术交流中心奖学金).
Working Experience （工作经历）
Tenure-track Assistant Professor (终身教职序列助理教授), since Mar. 2014, leader of Computational Physics Group, Radboud University, the Netherlands.
Post-Doc, Feb. 2009 ~ Feb. 2014, at the department of Theory of Condensed Matter, Radboud University, the Netherlands.
Post-Doc, Feb. 2008 ~ Jan. 2009, at the department of Computational Physics, University of Groningen, the Netherlands. |
