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Numerical Methods for Strongly Correlated Physics Focus Group
Coordinator : 陳鴻宜教授 (Prof. Hong-Yi Chen(NTNU))
Committee members : 林瑜琤 教授(Prof. Y. C. Lin(NCCU)), 高英哲教授 (Prof. Ying-Jer Kao(NTU)), 陳永忠教授(Prof. Yung-Chung Chen(THU)), 陳柏中教授 (Professor Po-Chung Chen(NTHU)) , 陳穎叡教授(Prof.Yiing-Rei Chen(NTNU)), 關肇正教授(Prof. Chao-Cheng Kaun (AS))
Brief Description (請點選以下項目)
Members | Highlights | Visitors | Activities | Publications | Collaborations
Highlights of Research Results
Current focused topics selected and studied by the group members are: (1) Superconductors & Oxides, (2) Spintronics and spin Hall effect, (3) Multiferroics, (4) Low-dimensional system (graphene, quantum dot, nanotube, etc.), (5) Strongly correlated system of cold atoms, (6) Numerical methods in strongly correlated electronic systems, and (7) Quantum computing. Highlights of Research Results are as follows.
(底下的論文索引號碼,例如: [1],請參考 Publications)
(1) Superconductors and oxides
Ting-Kuo Lee, Chang-Ming Ho, Chi-Tin Shih and their collaborators have studied numerically the spectral weights for adding and removing an electron of the Gutzwiller projected d-wave superconducting state of the t-J-type models on finite lattices. They show that the product of weights is the same as in the weakly coupled case. A rigorous relation of spectral weights with doping in the electron doped system was derived with consistent results with the experiments [1]. They have also extended the calculations to study more systematically the low-energy physical properties of the plain vanilla d-wave RVB state. Overall qualitative agreement between the theory and the experiments in cuprtates is obtained [2].
Wen-Chin Wu and Cheng-Shi Liu have studied in details the coexistence of an AF order and the d-wave superconducting order parameter in electron-doped cuprate superconductors. Through the calculation of Raman scattering, neutron scattering, and the Andreev bound state associated with a [110] zero bias conductance peak, very positive and consistent results are obtained when the experiments are compared [3,4].