These phases can occur in frustrated quantum magnets, such as the paradigmatic Heisenberg model with nearest- and next-nearest-neighbor exchange interactions on the triangular lattice, the so-called J1J2 model. In this work, we compute the spectral function using large-scale matrix product state ...
We study the J1-J2-J3 classical Heisenberg model with ferromagnetic J1 on the triangular lattice using the Nematic Bond Theory. For parameters where the momentum space coupling function J~ q shows a discrete set of minima, we find that the system in general exhibits a single first-order phase...
These results suggest that there exist two topologically different spin disorder phases in honeycomb J1-J2 Heisenberg model.doi:10.1016/j.physe.2020.114037Jing Liu a bYa-Min Quan aH.Q. Lin c dLiang-Jian Zou a bPhysica E: Low-dimensional Systems and Nanostructures...
We tune this variational parameter to minimize the energy for the frustrated spin 1/2 J1-J2 antiferromagnetic Heisenberg model on the square lattice. Taking a cylindrical geometry, we are able to construct four topological sectors with even or odd number of fluxes penetrating the cylinder and even...
Low-energy singlet sector in the spin-1/2J1–J2Heisenberg model on a square latticeCondensed Matter - Strongly Correlated ElectronsBased on a special variant of the plaquette expansion, an operator is constructed whose eigenvalues give the low-energy singlet spectrum of a s...
We perform an in-depth investigation of the phase diagram of the J1J2 Heisenberg model on the square lattice. We take advantage of density matrix renormalization group and fully augmented matrix product states methods and reach unprecedented accuracy with large bond dimensions. We utilize excited-...
Triangular latticeThe spin-1 Heisenberg model on a triangular lattice with the ferromagnetic nearest, J=-(1-p)J, J>0, and antiferromagnetic third-nearest-neighbor, J=pJ, exchange interactions is studied for 0≤p≤1. Mori's projection operator technique is used. At p≈0.2 the ground state ...
Tensor networ simulation of phase diagram of frustrated J1-J2 Heisenberg model on a checkerboard latticeYanghao ChanYongjian HanLuming DuanAmerican Physical Society
A study is performed of Ising nematic ordering, the Ising nematic phase transition, and the temperature behavior of short-range order parameters in the Heisenberg quantum antiferromagnetic model with spin 1/2 on a two-dimensional square lattice, allowing for the exchange parameters of the first and...
WehavecomprehensivelyinvestigatedthefrustratedJ1-J2-J3Heisenbergmodelonasimplecubiclattice.Thismodelallowsthreeregimesofmagneticorder;viz.;(π;π;π);(0;π;π)and(0;0;π);denotedasAF1;AF2;andAF3;respectively.Theeffectsoftheinterplayofneighboringcouplingsonthemodelarestudiedintheentiretemperaturerange.The...