Stability of the spin- kagome ground state with breathing anisotropy
arXiv:1706.10105 · doi:10.1103/PhysRevB.96.205124
Abstract
We numerically study the spin- breathing kagome lattice. In this variation of the kagome Heisenberg antiferromagnet, the spins belonging to upward and downward facing triangles have different coupling strengths. Using the density matrix renormalization group (DMRG) method and exact diagonalization, we show that the kagome antiferromagnet spin liquid is extremely robust to this anisotropy. Materials featuring this anisotropy -- and especially the recently studied vanadium compound (DQVOF) -- may thus be very good candidates to realize the much studied kagome spin liquid. Further, we closely examine the limit of strong breathing anisotropy and find indications of a transition to a nematic phase.
12 pages, 15 figures
References in corpus (13)
- The density-matrix renormalization group in the age of matrix product states
- Spin Dynamics of the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu_3(OH)_6Cl_2
- Identifying Topological Order by Entanglement Entropy
- Projected wavefunction study of Spin-1/2 Heisenberg model on the Kagome lattice
- Ground State of the Kagome Lattice Heisenberg Antiferromagnet
- Vesignieite BaCu3V2O8(OH)2 as a Candidate Spin-1/2 Kagome Antiferromagnet
- Distinct Spin Liquids and their Transitions in Spin-1/2 XXZ Kagome Antiferromagnets
- Transfer Matrices and Excitations with Matrix Product States
- Numerical Contractor Renormalization Method for Quantum Spin Models
- Quantum Phase Transition in the SU(4) Spin-Orbital Model on the Triangular Lattice
- Nature of the spin liquid ground state in a breathing kagome compound studied by NMR and series expansion
- Effective quantum dimer model for trimerized kagome antiferromagnet
- Quantum simulations made easy plane