3 papers
cond-mat.str-el2001
The Net Spin Model
H. Q. Lin, J. L. Shen, H. Y. Shik
We study a set of exactly soluble spin models in one and two dimensions for any spin . Its ground state, the excitation spectrum, quantum phase transition points, as well as dim…
cond-mat.str-el1998
Ground State of the Double Exchange Model
Liang-Jian Zou, Qing-Qi Zheng, H. Q. Lin
We invesitgate the electronic correlation effect on the ground-state properties of the double exchange model for manganites by using a semiclassical approach and the slave-boson te…
cond-mat1996
Low energy excitations of the t-J model in 1D and 2D
R. Eder, Y. C. Chen, H. Q. Lin +3
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…