118 citations · 481 across the 7 of their papers we have counts for
5 papers
Rotational Symmetry Breaking in Sodium Doped Cuprates
Yan Chen, T. M. Rice, F. C. Zhang
For reasonable parameters a hole bound to a Na^{+} acceptor in Ca_{2-x}Na_{x}CuO_{2}Cl_{2} has a doubly degenerate ground state whose components can be represented as states with e…
Exploring Quantum Phase Transitions with a Novel Sublattice Entanglement Scenario
Y. Chen, Z. D. Wang, F. C. Zhang
We introduce a new measure called reduced entropy of sublattice to quantify entanglement in spin, electron and boson systems. By analyzing this quantity, we reveal an intriguing co…
Gossamer Superconductivity near Antiferromagnetic Mott Insulator in Layered Organic Conductors
J. Y. Gan, Yan Chen, Z. B. Su +1
Layered organic superconductors are on the verge of the Mott insulator. We use Gutzwiller variational method to study a Hubbard model including a spin exchange coupling term. The g…
Entanglement and Quantum Phase Transition in Low Dimensional Spin Systems
Yan Chen, Paolo Zanardi, Z. D. Wang +1
Entanglement of the ground states in and dimerized Heisenberg spin chains as well as in a two-leg spin ladder is analyzed by using the spin-spin concurrence and the entanglem…
Gossamer Superconductor, Mott Insulator, and Resonating Valence Bond State in Correlated Electron Systems
F. C. Zhang
Gutzwiller variational method is applied to an effective two-dimensional Hubbard model to examine the recently proposed gossamer superconductor by Laughlin. The ground state at hal…