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关于休斯敦大学李春华教授学术讲座的通知
来源:电力设备电气绝缘国家重点实验室   作者:管理员   人气:5732  发布时间:2010/6/12
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应西安交通大学电力设备电气绝缘国家重点实验室成永红教授邀请,休斯敦大学德克萨斯州超导中心李春华教授访问我校并作学术报告

 

报告内容:  常规超导体和高温超导体简介

Conventional and High Tc Superconductivity

:  李春华  教授

   间: 2010612(星期六)430

   点: 绝缘楼二楼会议室

报告人简介

 

 

见附件。

 

 

 

欢迎感兴趣的师生参加!

 

电力设备电气绝缘国家重点实验室

2010-6-12

 

CHUNHUA LI

 

 

 

Texas Center for Superconductivity

the University of Houston                                         Phone:   1-617-816-0818

3201 Cullen Blvd.                                                                                         

Houston, Texas 77004, USA                                                E-mail: chlicn@gmail.com

 

 

Education

 

August 2009                                  Doctor of Philosophy in Physics,

                      Boston College, Chestnut Hill, USA

June 2002                                          Master of Science in Condensed Matter Physics

                                                            Nanjing University, Nanjing, China

June 1999                                          Bachelor of Science

                                                            Nanjing University, Nanjing, China

 

Research & Teaching

 

September 2009 – Now                   Postdoctoral Fellow

Texas center for Superconductivity at the University of Houston, Houston, USA

September 2008 – August 2009     Research Assistant

                                                               Department of Physics, Boston College,

                               Chestnut Hill, USA

September 2002 – May 2008         Teaching Assistant (Classical Mechanics, Quantum Mechanics, Statistical Mechanics, Solid State Physics)

                                                            Department of Physics, Boston College,

                              Chestnut Hill, USA

September 1999 - June 2002            Graduate Student Research Assistant

                                                                 Department of Physics,

                                                                 Nanjing University,  Nanjing, China

September 2000 - January 2001           Teaching Assistant (College

                                   Laboratory)

                                                                      Department of Physics,

                                   Nanjing University, Nanjing, China

 

 

Research Interests & Accomplishments

 

In my past research, I focused on both experimental and theoretical aspects of novel materials in condensed matter physics.  I studied the dielectric and switching properties of various ferroelectric materials such as SrBi2Ta2O9 thin films and Pb(Zr0.52Ti­0.48)O3 ceramics.  I also simulated the switching process and nucleation and domain growth in these systems using the Monte Carlo method.  By developing an unrestricted Gutzwiller approximation and applying it to the model, I investigated the spontaneous inhomogeneous states in cuprate superconductors and showed that Fermi surface nesting played an important role in forming checkerboard-like patterns in correlated electron systems.

 

For the future research, I intend to mainly concentrate on the theoretical prediction and explanation of low dimensional and surface properties of new materials.  Specifically, the following two areas are of my interest.  1 Unconventional superconductivity. The quasi two-dimensionality of the cuprates and the newly discovered iron-based superconductors points to the importance of low dimensional physics.  In these systems, various competing phases are close in energy which leads to phase separation and inhomogeneous states.  Large scale real space calculations are desired to study these states.  2 Electronic properties in mesoscopic materials.  Downsizing materials to the nanometer scale leads to completely new phenomena and novel properties.  These properties are important to our basic understanding as well as their applications.  I will study the spin transport on the surfaces and edges of topological insulators and electronic properties of graphene nano ribbons.

 

 

Presentations & Publications

 

Oral Presentations:

1.        Mott and Wigner-Mott transition away from half-filling, American Physical Society March Meeting, Pittsburgh, USA, March, 2009.

2.        Inhomogeneous state with checkerboard pattern in the model, American Physical Society March Meeting, Baltimore, USA, March, 2006.

3.        Magnetic structure and local moment formation induced by nonmagnetic impurities in high  superconductors, American Physical Society March Meeting, Montreal Canada, March, 2004.

 

 

Publications:

1.        Mott and Wigner-Mott transitions in doped correlated electron systems: Effects of superlattice potential and intersite correlation, Chunhua Li and Ziqiang Wang, Phys. Rev. B 80, 125130 (2009).

2.        Inhomogeneous states with checkerboard order in the  model, Chunhua Li, Sen Zhou and Ziqiang Wang, Phys. Rev. B 73, 060501 (2006).

3.        63,65Cu nuclear quadruple resonance study of YB2(Cu1-xNix)3O7-δ,  X. N. Ying, B. Q. Li, A. Li, Z. H. Bao, C.H. Li and Y. N. Wang, Solid State Comm. 121, 263-267 (2002).

4.        Switching process in SBT thin films, Chunhua Li, Lei Guo, Jinsong Zhu and Yening Wang, Integrated Ferroelectrics 48, 181-189 (2002).

5.        Switching in Ferroelectric thin film: Simulation with Heterogeneous Nucleation, Chunhua Li, Xiaobing Chen, Jinsong, Zhu and Yening Wang, Ferroelectrics, 252, 105-112 (2001).

6.        Monte Carlo simulation of ferroelectric polarization switching, X. B. Chen, C. H. Li, F. Yan, J. S. Liu, J. S. Zhu and Y. N. Wang, Integrated Ferroelectrics 32, 1015-1023 (2001).

7.        Polarization switching of SrBi2Ta2O9 thin films prepared by metalorganic decomposition, X. B. Chen, C. H. Li, F. Yan, D. Wu, J. S. Zhu and Y. N. Wang, Integrated Ferroelectrics 33, 145-153 (2001).

8.        Extrinsic size effect on polarization switching in SrBi2Ta2O9 thin films  Xiaobing Chen, Feng Yan, Chunhua Li, Di Wu, Jinsong Zhu, and Yening Wang, Ferroelectrics 260, 39-44 (2001).

9.        Dielectric relaxation and internal friction related to the mobility of domain wall in PZT ferroelectrics, X. B. Chen, C.H. Li, Y. Ding, Z. F. Zhang, H. M. Shen, J. S. Zhu and Y. N. Wang, Phys. Stat. Sol. A 179, 455-461 (2000).

10.   Switching properties of SrBi2Ta2O9 thin films produced by metal-organic decomposition, X. B. Chen, F. Yan, C.H. Li, Z. G. Zhang, J. S. Zhu and Y. N. Wang,. Appl. Phys. Lett. 76, 369-371 (2000).

Pb(Zr0.52Ti0.48)O3 陶瓷畴界粘滞运动的介电损耗模拟,  陈小兵, 严锋, 李春华, 朱劲松, 沈惠敏, 王业宁,   物理学报 48, 1529 (1999).
 
 
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