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 J1 -J2 model. In this work, we compute the spectral function using large-scale matrix product state ...
J2 classical XY model on a square lattice. In the frustrated phase corresponding to J2 > J1/2, an Ising order parameter emerges by an "order due to disorder" effect. This leads to a discrete symmetry plus the O(2) global one. We formulate the problem in a Coulomb gas language and...
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...
The Heisenberg model on a triangular lattice is a prime example for a geometrically frustrated spin system. However most experimentally accessible compounds have spatially anisotropic exchange interactions. As a function of this anisotropy, ground states with different magnetic properties can be realized. ...
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...
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...
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...
Tensor networ simulation of phase diagram of frustrated J1-J2 Heisenberg model on a checkerboard latticeYanghao ChanYongjian HanLuming DuanAmerican Physical Society
Philippe Sindzingre, L Seabra, Nic Shannon, and Tsutomu Momoi. Phase dia- gram of the spin-1/2 j 1 - j 2 - j 3 heisenberg model on the square lattice with ferromagnetic j 1. Journal of Physics: Conference Series, 145(1):012048, 2009....
WehavecomprehensivelyinvestigatedthefrustratedJ1-J2-J3Heisenbergmodelonasimplecubiclattice.Thismodelallowsthreeregimesofmagneticorder;viz.;(π;π;π);(0;π;π)and(0;0;π);denotedasAF1;AF2;andAF3;respectively.Theeffectsoftheinterplayofneighboringcouplingsonthemodelarestudiedintheentiretemperaturerange.The...