183 citations · 277 across the 7 of their papers we have counts for
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cond-mat.str-el2010★ 183 cited
Particle-hole symmetry and interaction effects in the Kane-Mele-Hubbard model
Dong Zheng, Guang-Ming Zhang, Congjun Wu
We prove that the Kane-Mele-Hubbard model with purely imaginary next-nearest-neighbor hoppings has a particle-hole symmetry at half-filling. Such a symmetry has interesting consequ…
cond-mat.str-el2010★ 21 cited
Continuous quantum phase transition between two topologically distinct valence bond solid states associated with the same spin value
Dong Zheng, Guang-Ming Zhang, Tao Xiang +1
We propose a simple one-dimensional spin-2 Hamiltonian, which exhibits two topologically distinct valence bond solid states in different exactly solvable limits. We then construct…