Incommensurate correlations in the anisotropic triangular Heisenberg lattice

Antiferromagnetic Heisenberg model on an anisotropic triangular lattice in the presence of a magnetic field

Spin wave analysis to the spatially-anisotropic Heisenberg antiferromagnet on triangular lattice

We study the phase diagram at T = 0 of the antiferromagnetic Heisenberg model on the triangular lattice with spatially-anisotropic interactions. For values of the anisotropy very close to Jα/Jβ = 0.5, conventional spin wave theory predicts that quantum fluctuations melt the classical structures, even for arbitrary values of S. From the limit of weakly coupled chains, Jβ << Jα, it is shown that ...

A quantum fidelity study of the anisotropic next-nearest-neighbour triangular lattice Heisenberg model.

Ground- and excited-state quantum fidelities in combination with generalized quantum fidelity susceptibilites, obtained from exact diagonalizations, are used to explore the phase diagram of the anisotropic next-nearest-neighbour triangular Heisenberg model. Specifically, the J'-J2 plane of this model, which connects the J1-J2 chain and the anisotropic triangular lattice Heisenberg model, is exp...

Heisenberg Antiferromagnet on a Triangular Lattice

Spin-liquid phase in an anisotropic triangular-lattice Heisenberg model: Exact diagonalization and density-matrix renormalization group calculations

Based on exact diagonalization and density matrix renormalization group method, we show that an anisotropic triangular lattice Heisenberg spin model has three distinct quantum phases. In particular, a spin-liquid phase is present in the weak interchain coupling regime, which is characterized by an anisotropic spin structure factor with an exponential-decay spin correlator along the weaker coupl...