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cond-mat1995
Impurity Energy Level Within The Haldane Gap
Wei Wang, Shaojin Qin, Zhong-Yi Lu +2
An impurity bond in a periodic 1D antiferromagnetic, spin 1 chain with exchange is considered. Using the numerical density matrix renormalization group method, we find a…
cond-mat1993
The Haldane Energy Gap of A Doped Linear-Chain Heisenberg Antiferromagnet
Zhong-Yi LU, Zhao-Bin, SU +1
Using the valence-bond-solid (VBS) approach and the Schwinger boson mean field approximation, we study the dependence of the Haldane gap of a spin-1 linear chain Heisenberg antifer…