Coexistence of superconductivity and antiferromagnetism in self-doped bilayer t-t'-J model (2008)
Gan, J. Y., Mori, M., Lee, T. K., Maekawa, S.
A self-doped bilayer t-t'-J model of an electron- and a hole-doped planes is studied by the slave-boson mean-field theory. A hopping integral between the differently doped planes, which are generated...
Photocatalytic production of hydrogen on Ni/NiO/KNbO3/CdS nanocomposites using visible light (2008)
Choi, Jina, Ryu, Su Young, Balcerski, William, Lee, T. K., Hoffmann, Michael R.
The photocatalytic production of H2 from water splitting was demonstrated on Ni/NiO/KNbO3/CdS nanocomposites using visible light irradiation at wavelengths >400 nm in the presence of isopropanol. The...
Chen, Y.Y., Huang, P.H., Ou, M.N., Wang, C.R., Yao, Y.D., Lee, T.K., ...
Huang, C. L., Chang, Y. T., Sun, C. P., Shen, H. Y., Chou, C. C., ...
To resolve the discrepancies of the superconducting order parameter in quasi-two-dimensional NbSe_2, comprehensive specific-heat measurements have been carried out. By analyzing both the zero-field...
Low-energy Spectra of the t-J-Type Models Studied by Variational Approach (2006)
Chou, Chung-Pin, Lee, T. K., Ho, Chang-Ming
We discuss recent progress of understanding the phenomena observed in high Tc cuprates by studying the d-wave resonating-valence-bond (d-RVB) based trial wave functions for the 2-dimensional t-J-type...
Chou, Chung-Pin, Lee, T. K., Ho, Chang-Ming
The spectral weights (SW's) for adding and removing an electron of the Gutzwiller projected d-wave superconducting (SC) state of the t-J-type models are studied numerically on finite lattices....
Supersolid phase in spin dimer XXZ systems under magnetic field (2006)
Using quantum Monte Carlo method, we study, under external magnetic fields, the ground state phase diagram of the two-dimensional spin $S$=1/2 dimer model with an anisotropic intra-plane...
Yang, Kai-Yu, Shih, C. T., Chou, C. P., Huang, S. M., Lee, T. K., Xiang, T., ...
In a recent review by Anderson and coworkers\cite{Vanilla}, it was pointed out that an early resonating valence bond (RVB) theory is able to explain a number of unusual properties of high temperature...
Comparative analysis of specific heat of YNi2B2C using nodal and two-gap models (2005)
Huang, C. L., Lin, J. Y., Sun, C. P., Lee, T. K., Kim, J. D., Choi, E. M., ...
The magnetic field dependence of low temperature specific heat in YNi2B2C was measured and analyzed using various pairing order parameters. At zero magnetic field, the two-gap model which has been...
Spin dynamics in the antiferromagnetic phase for electron-doped cuprate superconductors (2004)
Yuan, Qingshan, Lee, T. K., Ting, C. S.
Based on the $t$-$t'$-$t''$-$J$ model we have calculated the dynamical spin susceptibilities in the antiferromagnetic (AF) phase for electron-doped cuprates, by use of the slave-boson mean-field...
Study of gossamer superconductivity and antiferromagnetism in the t-J-U model (2004)
Yuan, Feng, Yuan, Qingshan, Ting, C. S., Lee, T. K.
The d-wave superconductivity (dSC) and antiferromagnetism are analytically studied in a renormalized mean field theory for a two dimensional t-J model plus an on-site repulsive Hubbard interaction...
Shih, C. T., Chen, Y. C., Chou, C. P., Lee, T. K.
The possibility of coexistence of superconductivity (SC) and antiferromagnetic long range order (AFLRO) of the two-dimensional extended $t-J$ model in the very underdoped region is studied by the...
Orbital Polarization, Surface Enhancement and Quantum Confinement in Nano-cluster Magnetism (2004)
Wan, Xiangang, Zhou, Lei, Dong, Jinming, Lee, T. K., Wang, Ding-sheng
Within a rather general tight-binding framework, we studied the magnetic properties of Ni$_{n}$ clusters with $n=9$ through 60. In addition to usual hopping, exchange, and spin-orbit coupling terms,...
Yuan, Qingshan, Chen, Yan, Lee, T. K., Ting, C. S.
By use of the slave-boson mean-field approach, we have studied the electron-doped t-t'-t''-J model in the antiferromagnetic (AF) state. It is found that at low doping the Fermi surface (FS) pockets...
Enhancement of Pairing Correlation by t' in the Two-Dimensional Extende d t-J Model (2004)
Shih, C. T., Lee, T. K., Eder, R., Chen, Y. C.
We investigate the effects of the next-nearest-neighbor ($t'$) and the third-nearest-neighbor (t'') hopping terms on superconductivity (SC) correlation in the 2D hole-doped extended t-J model based...
Low-energy spectra in the t-J type models at light doping (2003)
Lee, Wei-Cheng, Lee, T. K., Ho, Chang-Ming, Leung, P. W.
Based on a variational approach, we propose that there are two kinds of low energy states in the t-J type models at low doping. In a quasi-particle state an unpaired spin bound to a hole with a...
Guided Simulated Annealing Method for Optimization Problems (2003)
Chou, C. I., Han, R. S., Li, S. P., Lee, T. K.
Incorporating the concept of order parameter of the mean-field theory into the simulated annealing method, we presented a new optimization algorithm, the guided simulated annealing method. In this...
Theory for Slightly Doped Antiferromagnetic Mott Insulators (2002)
Lee, T. K., Ho, Chang-Ming, Nagaosa, Naoto, Lee, Wei-Cheng
Trial wavefunctions, constructed explicitly from the unique 2-dimensional Mott insulating state with antiferromagnetic order, are proposed to describe the low-energy states of a Mott insulator...
Magnetic polarization induced by nonmagnetic impurities in high Tc cuprates (2002)
The magnetic polarization induced by nonmagnetic impurities such as Zn in high Tc cuprate compounds is studied by the variational Monte Carlo simulation. The variational wave function is constructed...
Revisit Phase Separation of the Two-Dimensional $t-J$ model by the Power-Lanczos Method (2001)
Shih, C. T., Chen, Y. C., Lee, T. K.
The power-Lanczos (PL) method is one kind of Green's function Monte-Carlo simulation, which is improved by Lanczos iterations. The ground state energies of strongly-correlated models can be evaluated...
Superconducting condensation energy and neutron resonance in high-Tc superconductors (2001)
Li, Jian-Xin, Mou, Chung-Yu, Gong, Chang-De, Lee, T. K.
Based on the slave-boson theory of the two-dimensional $t-t'-J$ model, we calculate the superconducting condensation energy for optimally doped and overdoped high $T_{c}$ cuprates at finite...
Reconfigurable Computing for Augmented Reality (2000)
W. Luk, T. K. Lee, J. R. Rice, N. Shirazi
Augmented reality involves combining threedimensional real and synthetic objects for realtime user interaction. We describe a framework for supporting augmented reality applications by appropriate...
A Consistent Picture for Resonance Neutron Peak and ARPES Spectra in High-Tc Superconductors (1999)
Li, Jian-Xin, Mou, Chung-Yu, Lee, T. K.
The spectra observed in ARPES measurements are examined together with the resonance peak observed in neutron scatterings, based on the slave-boson approach to $t-t^{\prime}-J$ model. We show that the...
Numerical Study of the Pairing Correlation of the t-J Type Models (1999)
Shih, C. T., Chen, Y. C., Lee, T. K.
We reported that the pair-pair correlation function of the two-dimensional t-J model does not have long-range d-wave superconducting correlations in the interesting parameter range of $J/t \leq 0.5$....
Quasiparticle Resonant States Induced by a Unitary Impurity in a d-Wave Superconductor (1999)
Zhu, Jian-Xin, Lee, T. K., Ting, C. S., Hu, Chia-Ren
The quasiparticle resonant states around a single nonmagnetic impurity with unitary scattering in a d-wave superconductor is studied by solving the Bogoliubov-de Gennes equations based on a t-J...
Reconfigurable Computing for Augmented Reality (1999)
W. Luk, T. K. Lee, J. R. Rice, N. Shirazi
Augmented reality involves combining threedimensional real and synthetic objects for realtime user interaction. We describe a framework for supporting augmented reality applications by appropriate...
A FPGA based Forth microprocessor (1999)
this paper a 16 bit FPGA based microprocessor, called MSL16, optimised for such applications is described. MSL16 utilises a stack architecture with each instruction occupying only 4 bits, leading to...
Effect of the Fermi surface destruction on transport properties in underdoped cuprates (1999)
Li, Jian-Xin, Wu, W. C., Lee, T. K.
Motivated by recent experimental measurements on the Fermi surface(FS) destruction in underdoped high-$T_{c}$ cuprates, we examine its effect on the transport properties based on the Boltzmann...
Recongurable Computing for Augmented Reality (1999)
Augmented reality involves combining threedimensional real and synthetic objects for realtime user interaction. We describe a framework for supporting augmented reality applications by appropriate...
Phase diagram of the two-chain Hubbard model (1998)
Park, Youngho, Liang, Shoudan, Lee, T. K.
We have calculated the charge gap and spin gap for the two-chain Hubbard model as a function of the on-site Coulomb interaction and the interchain hopping amplitude. We used the density matrix...
The Design of an Asynchronous Microprocessor (1998)
Martin, Alain J., Burns, Steven M., Lee, T. K., Borkovic, Drazen, Hazewindus, Pieter J.
Prejudices are as tenacious in science and engineering as in any other human activity. One of the most firmly held prejudices in digital VLSI design is that asynchronous circuits-a.k.a. self-timed or...
Lee, T. K., Subramanian, K. N.
Fracture toughness of brittle ceramic matrix composites with brittle reinforcements can be enhanced by mechanically weak interface due to frictional sliding between matrix and reinforcement during...
Stripe Stability in the Extended t-J Model on Planes and Four-Leg Ladders (1998)
Tohyama, T., Gazza, C., Shih, C. T., Chen, Y. C., Lee, T. K., Maekawa, S., ...
The tendencies to phase-separation and stripe formation of the t-J model on planes and four-leg ladders have been here reexamined including hole hopping terms t', t'' beyond nearest-neighbor sites....
We introduce a new framework for measurement-based Connection Admission Control (CAC) for multi-service networks. The framework encompasses function modules that allow customization for varying...
Simple Measurement-based Connection Admission Control for Heterogeneous Traffic Sources (1998)
The primary role of traffic control in multimedia networks is to protect the network and the user in order to achieve predefined network performance objectives, e.g. cell loss ratio. An additional...
d-Wave Pairing Correlation in the Two-Dimensional t-J Model (1998)
Shih, C. T., Chen, Y. C., Lin, H. Q., Lee, T. K.
The pair-pair correlation function of the two-dimensional t-J model is studied by using the power-Lanczos method and an assumption of monotonic behavior. In comparison with the results of the ideal...
An FPGA Implementation of GENET for Solving Graph Coloring Problems (1998)
T. K. Lee, K. H. Lee, K. T. Chan, S. K. Hui, H. K. Yeung, ...
and vertex z 1 cannot both be assigned the color 0. Once a CSP has been transformed into a network, the steps outlined below are performed to find one of its solutions. First, each connection in the...
A FPGA based Forth microprocessor (1998)
this paper a 16 bit FPGA based microprocessor, called MSL16, optimised for such applications is described. MSL16 utilises a stack architecture with each instruction occupying only 4 bits, leading to...
Phase Separation of the Two-Dimensional t-J model (1997)
Shih, C. T., Chen, Y. C., Lee, T. K.
The boundary of phase separation of the two-dimensional t-J model is investigated by the power-Lanczos method and Maxwell construction. The method is similar to a variational approach and it...
Low energy excitations of the t-J model in 1D and 2D (1996)
Eder, R., Chen, Y. C., Lin, H. Q., Ohta, Y., Shih, C. T., Lee, T. K.
We present an exact diagonalization study of the low energy singlet and triplet states for both 1D and 2D t-J model. A scan of the parameter ratio J/t shows that for nearly all low energy states in...
Variational Study of the Spin-Gap Phase of the One-Dimensional t-J Model (1996)
We propose a correlated spin-singlet-pairs wave function to describe the spin-gap phase of the one-dimensional $t-J$ model at low density. Adding a Jastrow factor with a variational parameter, $\nu$,...
Dispersion of a single hole in the t-J model (1996)
The dispersion of a single hole in the t-J model obtained by the exact result of 32 sites and the results obtained by self-consistent Born approximation and the Green function Monte Carlo method can...
t-J model Studied by the New Lanczos-Power Method (1994)
The initial trial wave function used in a simple ground-state projection method, the power method, is systematically improved by using Lanczos algorithm. Much faster convergence to the ground state...
Is there spin-charge separation in the 2D Hubbard and t-J models at low electronic densities? (1994)
Chen, Y. C., Moreo, A., Ortolani, F., Dagotto, E., Lee, T. K.
The spin and density correlation functions of the two-dimensional Hubbard model at low electronic density $$ are calculated in the ground state by using the power method, and at finite temperatures...
Non-Fermi-Liquid-Like Behavior in The Two-Dimensional t-J Model (1994)
The spin, charge and pairing correlation functions for the ground state of two-dimensional $t-J$ model are calculated by using the power method which projects out the ground state from a variational...
The First Aysnchronous Microprocessor: The Test Results (1989)
Martin, Alain J., Burns, Steven M., Lee, T. K., Borkovic, Drazen, Hazewindus, Pieter J.
No abstract available.
Proteolytic maturation of protein C upon engineering the mouse mammary gland to express furin.
Drews, R, Paleyanda, R K, Lee, T K, Chang, R R, Rehemtulla, A, Kaufman, R J, ...
Endoproteolytic processing of the human protein C (HPC) precursor to its mature form involves cleavage of the propeptide after amino acids Lys-2-Arg-1 and removal of a Lys156-Arg157 dipeptide...
Construction and characterization of a single-chain catalytic antibody.
Gibbs, R A, Posner, B A, Filpula, D R, Dodd, S W, Finkelman, M A, Lee, T K, ...
The antigen-binding (Fab) fragment of the catalytic monoclonal antibody NPN43C9 has recently been cloned by using bacteriophage lambda. By inserting the variable regions of this Fab coding sequence...
Diauxic Growth in Rice Suspension Cells Grown on Mixed Carbon Sources of Acetate and Glucose.
Diauxic growth was observed in rice (Oryza sativa L.) suspension cells growing on acetate (10 mM) and glucose (10 mM). Cells used acetate during the first growth phase and the acetate level in the...
Lee, T K, Hutchinson, H D, Ziegler, D W
Rabies humoral antibodies were induced in eight New Zealand rabbits by a single intramuscular injection of inactivated suckling mouse brain rabies vaccine. The primary response to immunization was...
Rothberger, H, McGee, M P, Lee, T K
Experiments were carried out to examine relationships between alveolar macrophage maturity and amounts of tissue factor (Clotting Factor III) in these cells under physiologic conditions and during...
Multiple primary carcinomas of the colon and associated extracolonic primary malignant tumors.
Lee, T K, Barringer, M, Myers, R T, Sterchi, J M
A review of 308 cases of colorectal carcinoma showed 12 cases (3.9%) of colorectal multiple primary malignant tumors and 14 cases (4.5%) of colorectal primary malignant tumor associated with...
Lodder, A L, Lee, T K, Ballester, R
Wsc1p, Wsc2p, Wsc3p, and Wsc4p, members of a novel protein family in the yeast Saccharomyces cerevisiae, are putative sensors or receptors in the stress response. Genetic characterization suggests...
Proteolytic maturation of protein C upon engineering the mouse mammary gland to express furin.
Drews, R, Paleyanda, R K, Lee, T K, Chang, R R, Rehemtulla, A, Kaufman, R J, ...
Endoproteolytic processing of the human protein C (HPC) precursor to its mature form involves cleavage of the propeptide after amino acids Lys-2-Arg-1 and removal of a Lys156-Arg157 dipeptide...
Construction and characterization of a single-chain catalytic antibody.
Gibbs, R A, Posner, B A, Filpula, D R, Dodd, S W, Finkelman, M A, Lee, T K, ...
The antigen-binding (Fab) fragment of the catalytic monoclonal antibody NPN43C9 has recently been cloned by using bacteriophage lambda. By inserting the variable regions of this Fab coding sequence...
Diauxic Growth in Rice Suspension Cells Grown on Mixed Carbon Sources of Acetate and Glucose.
Diauxic growth was observed in rice (Oryza sativa L.) suspension cells growing on acetate (10 mM) and glucose (10 mM). Cells used acetate during the first growth phase and the acetate level in the...
Lee, T K, Hutchinson, H D, Ziegler, D W
Rabies humoral antibodies were induced in eight New Zealand rabbits by a single intramuscular injection of inactivated suckling mouse brain rabies vaccine. The primary response to immunization was...
Rothberger, H, McGee, M P, Lee, T K
Experiments were carried out to examine relationships between alveolar macrophage maturity and amounts of tissue factor (Clotting Factor III) in these cells under physiologic conditions and during...
Multiple primary carcinomas of the colon and associated extracolonic primary malignant tumors.
Lee, T K, Barringer, M, Myers, R T, Sterchi, J M
A review of 308 cases of colorectal carcinoma showed 12 cases (3.9%) of colorectal multiple primary malignant tumors and 14 cases (4.5%) of colorectal primary malignant tumor associated with...
Lodder, A L, Lee, T K, Ballester, R
Wsc1p, Wsc2p, Wsc3p, and Wsc4p, members of a novel protein family in the yeast Saccharomyces cerevisiae, are putative sensors or receptors in the stress response. Genetic characterization suggests...
Indolent glioma: a cause of epilepsy.
Lee, T K, Nakasu, Y, Jeffree, M A, Molyneux, A J, Adams, C B
We studied eight patients with indolent gliomas. In all eight cases, despite characteristic radiological features, there was a delay in diagnosis because of misinterpretation of the initial computed...
Functional re-evaluation of the putative glutathione transporters, RcGshT and RsGshT.
Li, L., Lee, T. K., Ballatori, N.
Transport systems that mediate glutathione (GSH) efflux from hepatocytes into blood plasma and bile have been characterized extensively in sinusoidal and canalicular membrane vesicles, and recent...
Hepatic glutathione and glutathione S-conjugate transport mechanisms.
Lee, T. K., Li, L., Ballatori, N.
Glutathione (GSH) plays a critical role in many cellular processes, including the metabolism and detoxification of oxidants, metals, and other reactive electrophilic compounds of both endogenous and...