李定國 / 特聘研究員兼所長

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連絡資訊

學歷

  • 美國布朗大學物理博士
  • 台灣大學

秘書

洪敏玲 / 886-2-2789-6750

研究興趣

凝態理論物理 ; 高溫超導體 ; 強作用電子系統 ; 計算物理與最佳化演算 ; 三維影像與 x光繞射顯微術 ;

經歷

  • 2012-中央研究院物理研究所所長
  • 2008-2012中央研究院學術諮詢總會執行祕書
  • 2007-2012中央研究院學術事務組主任
  • 2004-中央研究院物理研究所特聘研究員
  • 2004-2006奈米國家型科技計畫 計畫總主持人
  • 2001-國立清華大學合聘教授
  • 1998-國立台灣大學合聘教授
  • 1997-2003國家理論科學研究中心物理組主任
  • 1996-2004中央研究院物理所研究員
  • 1981-1997美國維吉尼亞州理工大學物理系助理教授、副教授、教授
  • 1979-1981加州大學聖塔芭芭拉分校理論物理所博士後研究
  • 1975-1979紐約市立大學物理所博士後研究

學術著作

期刊論文

  • [1]     Peayush Choubey, Wei-Lin Tu, Ting-Kuo Lee and P. J. Hirschfeld, 2017, “Incommensurate charge ordered states in the t-t’-J model”, New Journal of Physics, Volume 19, 1-15.

  • [2]     Huan-Kuang Wu,T. K. Lee, 2017, “Spectral evolution with doping of an antiferromagnetic Mott state”, Phys. Rev. B, B95, 035133, 1-7.

  • [3]     Wan-Ju Li, Sung-Po Chao* and T. K. Lee, 2016, “Controversy over large proximity induced s wave like pairing from a d wave superconductor”, PHYSICAL REVIEW B, 035140. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [4]     Po-Nan Li, Zong-Han Wu, Chien-Nan Hsiao, Ting-Kuo Lee and Chien-Chun Chen*, 2016, “Determination of three-dimensional atomic positions from tomographic reconstruction using ensemble empirical mode decomposition”, NEW JOURNAL OF PHYSICS, 18, 083025. (SCI) (IF: 3.57; SCI ranking: 12.7%)

  • [5]     Po-Hao Chou, Liang-Jun Zhai, Chung-Hou Chung, Chung-Yu Mou*, T. K. Lee, 2016, “Emergence of a Fermionic finite-temperature critical point in a Kondo lattice”, PHYSICAL REVIEW LETTERS, 116, 177002. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [6]     Wei-Lin Tu,T. K. Lee, 2016, “Genesis of charge orders in high temperature superconductors”, Scientific Reports, (6)18675. (SCI) (IF: 5.228; SCI ranking: 11.1%)

  • [7]     Wan-Ju Li, Cheng-Ju Lin and Ting-kuo Lee*, 2016, “Signatures of strong correlation effects in resonant inelastic x-ray scattering studies on Cuprates”, PHYSICAL REVIEW B, 94, 075127. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [8]     Lei Hao* and T. K. Lee, 2015, “Effective low energy theory for superconducting topological insulators”, JOURNAL OF PHYSICS-CONDENSED MATTER, 27,105701. (SCI) (IF: 2.209; SCI ranking: 41.8%)

  • [9]     Te-Chih Shung, Chung-Yu Mou, T. K. Lee and Yang-Yuan Chen*, 2015, “Surface-dominated transport and enhanced thermoelectric performance in topological insulator Bi1.5Sb0.5Te1.7Se1.3”, Nanoscale, 7, 518-523. (SCI) (IF: 7.76; SCI ranking: 11%,8.5%,14.5%,8.3%)

  • [10]     Lei Hao*, Guiling Wang, Ting-Kuo Lee, Jun Wang, Wei-Feng Tsai and Yong-Hong Yang, 2014, “Anisotropic spin singlet pairings in CuxBi2Se3 and Bi2Te3”, PHYSICAL REVIEW B, 89, 214505. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [11]     Ti-Yen Lan, Po-Nan Li and T. K. Lee*, 2014, “Method to enhance resolution of x-ray coherent diffraction imaging for non-crystalline bio-samples”, NEW JOURNAL OF PHYSICS, 16, 033016. (SCI) (IF: 3.57; SCI ranking: 12.7%)

  • [12]     Xufeng Kou, Shih-Ting Guo, Yabin Fan, Lei Pan, Murong Lang, Ying Jiang, Qiming Shao, Tianxiao Nie, Koichi Murata, Jianshi Tang, Yong Wang, Liang He, Ting-Kuo Lee, Wei-Li Lee, and Kang L. Wang*, 2014, “Scale-invariant quantum anomalous Hall effect in magnetic topological insulators beyond two-dimensional limit”, PHYSICAL REVIEW LETTERS, 113, 137201. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [13]     Chia-Chi Chien, Ivan M. Kempson, Cheng Liang Wang, H. H. Chen, Yeukuang Hwu, N. Y. Chen, T. K. Lee, Kelvin K.-C. Tsai, Ming-Sheng Liu, Kwang-Yu Chang, C. S. Yang, and G. Margaritondo*, 2013, “Complete microscale profiling of tumor microangiogenesis: A microradiological methodology reveals fundamental aspects of tumor angiogenesis and yields an array of quantitative parameters for its characterization ”, BIOTECHNOLOGY ADVANCES, 31, 396. (SCI) (IF: 9.848; SCI ranking: 3.7%)

  • [14]     Yingying Peng, Jianqiao Meng, Daixiang Mou, Junfeng He, Lin Zhao, Yeu Wu, Guodong Liu, Xiaoli Dong, Shaolong He, Jun Zhang, Xiaoyang Wang, Qinjun Peng, Zhimin Wang, Shenjin Zhang, Feng Yang, Chuangtian Chen, Zuyan Xu, T. K. Lee and X. J. Zhou*, 2013, “Disappearance of nodal gap across the insulator-superconductor transition in a copper-oxide superconductor”, Nature Communications, 4,2459. (SCI) (IF: 11.329; SCI ranking: 4.8%)

  • [15]     Te-Chih Hsiung, Ding-Yuan Chen, Li Zhao, Yi-Hsin Lin, Chung-Yu Mou, Ting-Kuo Lee, Maw-Kuen Wu, and Yang-Yuan Chen*, 2013, “Enhanced surface mobility and quantum oscillations in topological insulator Bi1.5Sb0.5Te1.7Se1.3 nanoflakes”, APPLIED PHYSICS LETTERS, 103, 163111. (SCI) (IF: 3.142; SCI ranking: 19.3%)

  • [16]     Han Ma, T. K. Lee and Yan Chen*, 2013, “Formation and local symmetry of Holstein polaron in the t-J model”, NEW JOURNAL OF PHYSICS, 15, 043045. (SCI) (IF: 3.57; SCI ranking: 12.7%)

  • [17]     Sing-Ming Huang*, Chung-Yu Mou and Ting-kuo Lee, 2013, “Intrinsic high-temperature superconductivity in ternary iron selenides”, PHYSICAL REVIEW B, 88, 174510. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [18]     Ing-Shouh Hwang, Che-cheng Chang, Chien-Hung Lu, Shih-Chin Liu, Yuan-Chih Chang, Ting-Kuo Lee, Horng-Tay Jeng, Hong-Shi Kuo, Chun-Yueh Lin, Chia-Seng Chang, Tien T. Tsong, 2013, “Investigation of single-walled carbon nanotubes with a low-energy electron point projection microscopy”, NEW JOURNAL OF PHYSICS, 15, 043015. (SCI) (IF: 3.57; SCI ranking: 12.7%)

  • [19]     Chung-Pin Chou*, Frank Pollmann, T. K. Lee, 2012, “Matrix-Product based projected wave function ansatz for quantum many-body ground states”, PHYSICAL REVIEW B, 86,041105. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [20]     Chung-Pin Chou, Fan Yang and T. K. Lee*, 2012, “Grand-canonical variational approach for the t-J model”, PHYSICAL REVIEW B, 85,054510. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [21]     Chung-Pin Chou and Ting-Kuo Lee , 2012, “Nature of the inhomogeneous state of the extended t-J model on a square lattice ”, PHYSICAL REVIEW B, 85, 104511. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [22]     Chien-Chun Chen, Chien-Hung Lu, D. Chien, Jianwei Miao, T. K. Lee*, 2011, “A method for three-dimensional image reconstruction of radiation-sensitive samples with X-ray diffraction microscopy”, PHYSICAL REVIEW B, 84, 024112. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [23]     Chia-Chi Chien, Guilin Zhang, Y. Hwu*, Ping Liu, Weisheng Yue, Jianqi Sun, Yan Li, Hongjie Xue, Lisa X. Xu, Chang Hai Wang, Nanyow Chen, Chien Hung Lu, Ting-Kuo Lee, Yuh-Cheng Yang, Yen-Ta Lu, Yu-Tai Ching, T. F. Shih, P. C. Yang, J. H. Je, G. Margaritondo, 2011, “Detecting small lung tumors in mouse models by refractive-index microradiology”, Analytical & Bioanalytical Chemistry, 401, 827. (SCI) (IF: 3.125; SCI ranking: 20%,32.5%)

  • [24]     Chang-Ran Wang, Wen-Sen Lu, Lei Hao, Wei-Li Lee*, T. K. Lee, Feng Lin, I-Chun Cheng and Jain-Zhang Chen, 2011, “Enhanced thermoelectric power in dual-gated bilayer graphene”, PHYSICAL REVIEW LETTERS, 107, 186602. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [25]     Lei Hao, T. K. Lee, 2011, “Surface spectral function in the superconducting state of a topological insulator”, PHYSICAL REVIEW B, 83, 134516. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [26]     Lei Hao*, Peter Thalmeier and T. K. Lee, 2011, “Topological insulator ribbon: surface states and dynamical response”, PHYSICAL REVIEW B, 84, 235303. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [27]     Lei Hao*, T. K. Lee, 2010, “Thermopower of multilayer graphene”, PHYSICAL REVIEW B, 82, 245415. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [28]     R. Dronyak*, K. S. Liang, Jin-Sheng Tsai, Yuri P. Stetsko, T. K. Lee, F. R. Chen, 2010, “Electron Coherent Diffraction Tomography of a Nanocrystal”, APPLIED PHYSICS LETTERS, 96, 221907. (SCI) (IF: 3.142; SCI ranking: 19.3%)

  • [29]     Chung-Pin Chou, T. K.Lee*, 2010, “Mechanism of formation of half-doped stripes in underdoped cuprates”, PHYSICAL REVIEW B, 81, 060503. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [30]     Huaidong Jiang, Changyong Song, C. C. Chen, Rui Xu, Kevin S. Raines, Benjamin P. Fahimian, Chien-Hung Lu, T. K. Lee, Akio Nakashima, Jun Urano, Tetsuya Ishikawa, Fuyuhiko Tamanoi and Jianwei Miao*, 2010, “Quantitative 3D Imaging of Whole, Unstained Cells by X-ray Diffraction Microscopy”, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 107,11234. (SCI) (IF: 9.423; SCI ranking: 6.3%)

  • [31]     Lei Hao, T. K. Lee*, 2010, “Thermopower of gapped bilayer graphene”, PHYSICAL REVIEW B, 81,165445. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [32]     R. Dronyak, K. S. Liang, Yuri P. Stetsko, T. K. Lee, C. K. Feng, Jin-Sheng Tsai and F. R. Chen*, 2009, “Electron diffractive imaging of nano-objects using a guided method with a dynamic support”, APPLIED PHYSICS LETTERS, 95,111908. (SCI) (IF: 3.142; SCI ranking: 19.3%)

  • [33]     N. Fukushima, C. P. Chou and T. K. Lee*, 2009, “Impurity potential renormalization by strong electron correlation”, Physical Review B, 79(18),184510. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [34]     Chien-Chun Chen, Jianwei Miao and T. K. Lee, 2009, “Tomographic image alignment in 3D coherent diffraction microscopy”, PHYSICAL REVIEW B, 79(5),052102. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [35]     N. Fukushima, C.P. Chou and T. K. Lee, 2008, “Impurity scattering effects in STM studies of high-Tc superconductors”, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 69,3046. (SCI) (IF: 2.048; SCI ranking: 42.3%,47.8%)

  • [36]     C. P. Chou, T. K. Lee and C. M. Ho, 2008, “Spectral weights of the 2-dimensional t–J-type models: Wave function ”, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 69,2993. (SCI) (IF: 2.048; SCI ranking: 42.3%,47.8%)

  • [37]     C.P. Chou, T. K. Lee, 2008, “Variaitonal approach to strong correlation in the photoemission of electron-doped superconductors”, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 69,2944. (SCI) (IF: 2.048; SCI ranking: 42.3%,47.8%)

  • [38]     Chung-Pin Chou, Noboru Fukushima, and T. K. Lee, 2008, “Cluster-glass wave function in the two-dimensional extended t-J model”, Phys. Rev. B, 78:134530. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [39]     J. Y. Gan, M. Moir, T.K. Lee and S. Maekawa, 2008, “Coexistence of superconductivity and antiferromagnetism in self-doped bilayer t-t’-J model”, Phys. Rev. B, 78:134530. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [40]     C. C. Chen, Jianwei Miao, C. R. Wang and T. K. Lee, 2007, “Application of the optimization technique to non-crystalline x-ray diffraction microscopy-Guided hybrid input-out method (GHIO)”, Phys. Rev. B, 76, 064113. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [41]     C.L. Huang, J.-Y. Lin, Y.T. Chang, C.P. Sun, H.Y. Shen, C.C. Chou, H. Berger, T.K. Lee and H.D. Yang, 2007, “Experimental evidence for a two-gap structure of superconducting NbSe2: A specific-heat study in external magnetic fields”, Phys. Rev. B, 76, 212504. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [42]     K. K. Ng and T. K. Lee, 2007, “Field-induced supersolid phase in spin dimer XXZ systems”, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310:1371-1373. (SCI) (IF: 2.357; SCI ranking: 34.3%,28.8%)

  • [43]     Y.Y. Chen, P. H. Huang, M. N. Ou, C.R. Wang, Y.D. Yao, T.K. Lee, M. Y. Ho, J. M. Lawrence, and C. H. Booth, 2007, “Kondo interactions and magnetic correlations in CePt2 nanocrystals”, Phys. Rev. Lett., 98, 157206. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [44]     C. P. Chou, T.K. Lee and C. M. Ho, 2007, “Low-energy spectra of the t-J type models studied by variational approach”, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310, 474-479. (SCI) (IF: 2.357; SCI ranking: 34.3%,28.8%)

  • [45]     Changyong Song, Damien Ramunno-Johnson, Yoshinori Nishino, Yoshiki Kohmura, Tetsuya Ishikawa, Chien-Chun Chen, T. K. Lee and Jianwei Miao, 2007, “Phase retrieval from exactly oversampled diffraction intensity through deconvolution”, Phys. Rev. B, 75:012102. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [46]     C. T. Shih, J. J. Wu, C. P. Chou, Y. C. Chen and T. K. Lee, 2007, “Variational phase diagram of the electron-doped two-dimensional extended t-J model”, Chinese Journal of Physics, 45:207. (SCI) (IF: 0.464; SCI ranking: 89.9%)

  • [47]     C. L. Huang, J.Y. Lin, C. P. Sun, Lee, Ting-Kuo, J. D. Kim, E. M. Choi, S. I. Lee and H. D. Yang, 2006, “Comparative analysis of specific heat of YNi2B2C using nodal and two-gap models”, PHYSICAL REVIEW B, 73:012502. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [48]     C. R. Hsing, M. Y. Chou and Lee, Ting-Kuo, 2006, “Exchange-correlation energy in molecules: a variational quantum Monte Carlo study”, Phys. Rev. A, 74, 032507. (SCI) (IF: 2.765; SCI ranking: 18.9%,34.3%)

  • [49]     Kai-Yu Yang, C. T. Shih, C. P. Chou, S. M. Huang, Lee, Ting-Kuo, T. Xiang and F. C. Zhang, 2006, “Low energy physical properties of high Tc superconducting Cu-oxides – a comparison between plain vanilla RVB theory and experiments”, Phys. Rev. B, 73:224513. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [50]     K. K. Ng and Lee, Ting-Kuo, 2006, “Numerical study of magnetic field induced ordering in BaCuSi2O6 and related systems”, Phys. Rev. B, 73, 014433. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [51]     Lee, Ting-Kuo, C.T. Shih and C.M. Ho, 2006, “Spectra of the high Tc cuprates understood by variational studies of the t-J type models”, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 67:150-153. (SCI) (IF: 2.048; SCI ranking: 42.3%,47.8%)

  • [52]     C. P. Chou, Lee, Ting-Kuo and C. M. Ho, 2006, “Spectral weights, d-wave pairing amplitudes, and particle-hole tunneling asymmetry of a strongly correlated superconductor”, Phys. Rev. B, 74, 092503. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [53]     K. K. Ng and Lee, Ting-Kuo, 2006, “Supersolid phase in spin dimmer XXZ systems under magnetic field”, Phys. Rev. Lett., 97, 127204. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [54]     Jianwei Miao, Chien-Chun Chen, Changyong Song, Yoshinori Nishino, Yoshiki Kohmura, Tetsuya Ishikawa, Damien Ramunno-Johnson, Lee, Ting-Kuo and Subhash H. Risbud, 2006, “Three-dimensional GaN-Ga2O3 core shell structure revealed by x-ray diffraction microscopy”, Phys. Rev. Lett., 97:215503. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [55]     C.T. Shih, J. J. Wu, Y.C. Chen, C. Y. Mou, C. P. Chou, R. Eder and T.K. Lee, 2005, “Antiferromagnetism and superconductivity of the two-dimensional extended t-J model”, Low Temperature Physics, 31:757. (SCI) (IF: 0.67; SCI ranking: 89%)

  • [56]     Shih CT, Chen YC and Lee TK, 2005, “D-wave pairing of the two-dimensional extended t-J model”, CHINESE JOURNAL OF PHYSICS, 43, 543-546. (SCI) (IF: 0.464; SCI ranking: 89.9%)

  • [57]     Yuan QS, Lee TK and Ting CS, 2005, “Spin dynamics in the antiferromagnetic phase of electron-doped cuprate superconductors”, PHYSICAL REVIEW B, 71:134522. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [58]     C.T. Shih, Y.C. Chen, C. P. Chou and T.K. Lee, 2004, “Absence of coexistence of superconductivity and antiferromagnetism of hole-doped two-dimensional extended t-J model”, Phys. Rev. B, 70:220502. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [59]     Shih CT, Lee TK and Eder R et al., 2004, “Enhancement of pairing correlation by t(') in the two-dimensional extended t-J model”, PHYSICAL REVIEW LETTERS, 92:227002. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [60]     Yuan QS, Chen Y and Lee TK et al., 2004, “Fermi surface evolution in the antiferromagnetic state for the electron-doped t-t(')-t('')-J model”, PHYSICAL REVIEW B, 69:214523. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [61]     X.G. Wan, L. Zhou, J.M. Dong, T.K. Lee and D.S. Wang, 2004, “Orbital polarization, surface enhancement and quantum confinement in nano-cluster magnetism”, Phys. Rev. B, 69:174414. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [62]     Chou CI, Han RS and Lee TK et al., 2003, “A guided Monte Carlo approach to optimization problems”, LECTURE NOTES IN COMPUTER SCIENCE, 2690:447-451.

  • [63]     C.I. Chou, R.S. Han, S.P. Li and T.K. Lee, 2003, “Guided simulated annealing method for optimization problems”, Physical Review E, 67:066704. (SCI) (IF: 2.252; SCI ranking: 11.3%,33.3%)

  • [64]     W.C. Lee, T.K. Lee, C.M. Ho and P.W. Leung, 2003, “Low-energy spectra in t-J-type models at low doping levels”, PHYSICAL REVIEW LETTERS, 91: 057001. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [65]     T. K. Lee, C. M. Ho and Naoto Nagaosa, 2003, “Theory for slightly doped antiferromagnetic Mott insulators”, PHYSICAL REVIEW LETTERS, 90: 067001. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [66]     T. K. Lee, C. M. Ho, Naoto Nagaosa and W.C. Lee, 2003, “Theory of slightly doped antiferromagnetic Mott insulators”, JOURNAL OF LOW TEMPERATURE PHYSICS, 131: 169-179. (SCI) (IF: 0.787; SCI ranking: 83.6%,82.8%)

  • [67]     N. Nagaosa, T.K. Lee, C. M. Ho, T. Tohyama, Y. Shibata and S. Maekawa, 2003, “Theory of slightly doped Mott insulator”, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 388:15-18. (SCI) (IF: 0.835; SCI ranking: 80.7%)

  • [68]     T.K. Lee, C. T. Shih, Y. C. Chen and H. Q. Lin, 2002, “Comment on "Superconductivity in the two-dimensional t- j model"”, PHYSICAL REVIEW LETTERS, 89: 279702. (SCI) (IF: 7.645; SCI ranking: 7.6%)

學術會議(研討會)論文

專書

專書著作

主編之專書

專書內之論文

技術報告

其他論文

獎項及殊榮

(1) 國內學術研究獎項 2011-01 中華民國物理學會會士
(2) 其他國際學術研究獎項 2006 Fellow,Institute of Physics, UK
(3) 國內學術研究獎項 2005 侯金堆傑出榮譽獎
(4) 其他國際學術研究獎項 2004 Fellow, American Physical Society
(5) 國內學術研究獎項 2003 國科會傑出獎
(6) 國內學術研究獎項 1997 財團法人傑出人才講座

發現與突破

(1) 西元年:2010
研究人員(中):李定國、周崇斌、李定國
研究人員(英):LEE, TING-KUO, Chung-Pin Chou, T. K. Lee
研究成果名稱(英):Mechanism of formation of half-doped stripes in underdoped cuprates
簡要記述(英):Following our long term effort to understand the low energy phase of high temperature superconductors, recently we have studied the formation of stripe-like states in the t-J type models. In 2008 we found that these stripe states almost have the same energy as the uniform d-wave superconducting state. By using a variational Monte Carlo approach with this recently proposed stripe wave function, we showed that the strong correlation included in a t-J-type model has essentially all the necessary ingredients to form these stripes with modulations of charge density, spin magnetization, and pair field. If a perturbative effect of electron-phonon coupling to renormalize the effective mass or the hopping rate of holes is considered with the model, we find the half-doped stripes, which has on the average one half of a hole in one period of charge modulation, to be most stable energetic wise in the underdoped region, with doping concentration between 1/12 and 1/8. This is in good agreement with the observation in the neutron-scattering experiments.
主要相關著作:
Chung-Pin Chou, T. K.Lee*, 2010, “Mechanism of formation of half-doped stripes in underdoped cuprates”, PHYSICAL REVIEW B, 81, 060503. (SCI) (IF: 3.718; SCI ranking: 23.9%)
(2) 西元年:2010
研究人員(中):李定國
研究人員(英):LEE, TING-KUO, Huaidong Jiang, Changyong Song, Chien-Chun Chen, Rui Xu, Kevin S. Raines, Benjamin P. Fahimian, Chien-Hung Lu,Ting-Kuo Lee, Akio Nakashima, Jun Urano, Tetsuya Ishikawa, Fuyuhiko Tamanoi, and Jianwei Miao
研究成果名稱(英):Quantitative 3D imaging of whole, unstained cells by using X-ray diffraction microscopy
簡要記述(英):Here, we
report quantitative 3D imaging of a whole, unstained cell at a resolution
of 50–60 nm by X-ray diffraction microscopy.We identified
the 3D morphology and structure of cellular organelles including
cell wall, vacuole, endoplasmic reticulum, mitochondria, granules,
nucleus, and nucleolus inside a yeast spore cell. Furthermore, we
observed a 3D structure protruding from the reconstructed yeast
spore, suggesting the spore germination process. In collaboration with our experimental partners, we provide two theoretical tools for image reconstruction: the guided hybrid input0output method and the new alignment algorithm. These methods help to achieve improved resolution wiht only 25 projections used.
主要相關著作:
Huaidong Jiang, Changyong Song, C. C. Chen, Rui Xu, Kevin S. Raines, Benjamin P. Fahimian, Chien-Hung Lu, T. K. Lee, Akio Nakashima, Jun Urano, Tetsuya Ishikawa, Fuyuhiko Tamanoi and Jianwei Miao*, 2010, “Quantitative 3D Imaging of Whole, Unstained Cells by X-ray Diffraction Microscopy”, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 107,11234. (SCI) (IF: 9.423; SCI ranking: 6.3%)
(3) 西元年:2008
研究人員(中):李定國、周崇斌、福島昇、李定國
研究人員(英):LEE, TING-KUO, Chung-Pin Chou, Noboru Fukushima, T. K. Lee
研究成果名稱(中):t-J 模型的非均勻態波函數
研究成果名稱(英):Clutser-glass wave function in the two-dimensional extended t-J model
簡要記述(中):高溫超導體有一個令人困惑現象,在低掺雜區超導態是一個非均勻態,由雜亂的線條態(stripe state)組成。這個現象常被用來質疑解釋高溫超導的t-J模型,需要考慮其他作用力來造成與超導競爭的不均勻相,而且這些作用力也可能是造成超導的機制而並非是很多人想到的superexchange作用力J。我們最近的工作(物理評論B78, 134530 (2008))大致解決了這個困難。
我們以共振價鍵(Resonating Valence Bond)的觀念發展出一個解釋線條態的波函數得到了很驚訝的結果,這些由雜亂線條態組成的不均勻態原來就是t-J模型該有的一些狀態,不需要加入其他的作用力來產生這些不均勻態,長距離的超導關聯性質並不受這些雜亂度(disorder)影響,而且它有node及線性態密度,這些不平常的結果都與實驗相符。
簡要記述(英):The presence of inhomogeneous states like periodic stripes or random-oriented stripe domains in high temperature superconductors has been used to argue against the simple t-J model as it seems to imply the existence of competing orders that could be generated by other interactions. Further more, these interactions could be the main origin of superconductivity mechanism instead of the super exchange interaction J as believed by many. This important but valid criticism on t-J type models has been resolved by us recently (Phys. Rev. B78, 134530 (2008)). We have proposed a wave function for the stripe state based on the resonating valence bond idea. A very surprising result is found. The presence of the inhomogeneous state with randomly oriented four-lattice-constant stripe domain is actually an inherent nature of the t-J model. There is no need to introduce a competing interaction to understand the existence of these glass-like states. The long-range pairing correlation is not much influenced by the disorder in the glass state which also has nodes and linear density of states.
個人資料維護 | 著作目錄維護同步更新 | 最後更新日期 : 2017-09-11
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