A Schwinger boson mean-field theory is developed for spin liquids in a symmetric spin-orbital model in higher dimensions. Spin, orbital and coupled spin-orbital operators are treated equally. We evaluate the dynamic correlation functions and collective excitations spectra. As the collective excitations have a finite energy gap, we conclude that the ground state is a spin-orbital liquid with a two-fold degeneracy, which breaks the discrete spin-orbital symmetry. Based on this conclusion, we propose that broken symmetry or symmetric frustration instead of geometric quantum frustration provides a new route to explore the spin liquid states. Possible relevence of this spin liquid state to several realistic systems, such as CaV 4O 9 and Na 2Sb 2...
We construct a class of projected entangled pair states which is exactly the resonating valence bond...
© 2018 American Physical Society. The spin-12 Heisenberg model on the kagome lattice, which is close...
We study the spin-$1/2$ two-dimensional Shastry-Sutherland spin model by exact diagonalization of cl...
A reduced effective spin-orbital Hamiltonian in a symmetric spin-orbital system was derived by intro...
Based on the generalized valence bond picture, a Schwinger boson mean-field theory is applied to the...
Motivated by recent experimental and numerical evidences of deconfined quantum critical point and qu...
A spin-1/2 system with double orbital degeneracy may possess SU(4) symmetry. According to the group ...
* Lectures given in the Cargese summer school of strongly correlated electron systems, 1990. In this...
To describe the spin-orbital energy gap formation in the one-dimensional symmetrically coupled spin-...
4siWe study the ground-state phase diagram of the spin-1/2J(1)-J(2) Heisenberg model on the square l...
We consider the exchanged Hamiltonian H-ST = -J Sigma((rr')) (2S(r). S-r' -1/2)( 2T(r'). T-r' -1/2),...
Spin liquids represent exotic types of quantum matter that evade conventional symmetry-breaking orde...
Spin liquids represent exotic types of quantum matter that evade conventional symmetry-breaking orde...
We construct a class of projected entangled pair states which is exactly the resonating valence bond...
We study possible spin liquids on square lattice that respect all lattice symmetries and time-revers...
We construct a class of projected entangled pair states which is exactly the resonating valence bond...
© 2018 American Physical Society. The spin-12 Heisenberg model on the kagome lattice, which is close...
We study the spin-$1/2$ two-dimensional Shastry-Sutherland spin model by exact diagonalization of cl...
A reduced effective spin-orbital Hamiltonian in a symmetric spin-orbital system was derived by intro...
Based on the generalized valence bond picture, a Schwinger boson mean-field theory is applied to the...
Motivated by recent experimental and numerical evidences of deconfined quantum critical point and qu...
A spin-1/2 system with double orbital degeneracy may possess SU(4) symmetry. According to the group ...
* Lectures given in the Cargese summer school of strongly correlated electron systems, 1990. In this...
To describe the spin-orbital energy gap formation in the one-dimensional symmetrically coupled spin-...
4siWe study the ground-state phase diagram of the spin-1/2J(1)-J(2) Heisenberg model on the square l...
We consider the exchanged Hamiltonian H-ST = -J Sigma((rr')) (2S(r). S-r' -1/2)( 2T(r'). T-r' -1/2),...
Spin liquids represent exotic types of quantum matter that evade conventional symmetry-breaking orde...
Spin liquids represent exotic types of quantum matter that evade conventional symmetry-breaking orde...
We construct a class of projected entangled pair states which is exactly the resonating valence bond...
We study possible spin liquids on square lattice that respect all lattice symmetries and time-revers...
We construct a class of projected entangled pair states which is exactly the resonating valence bond...
© 2018 American Physical Society. The spin-12 Heisenberg model on the kagome lattice, which is close...
We study the spin-$1/2$ two-dimensional Shastry-Sutherland spin model by exact diagonalization of cl...