Bipartite entanglement in the spin-1/2 Ising-Heisenberg planar lattice constituted of identical trigonal bipyramidal plaquettes
arXiv:2006.00540 · doi:10.1016/j.physleta.2020.126629
Abstract
The bipartite entanglement is rigorously examined in the spin- Ising-Heisenberg planar lattice composed of identical inter-connected bipyramidal plaquettes at zero and finite temperatures using the quantity called concurrence. It is shown that the Heisenberg spins of the same plaquette are twice stronger entangled in the two-fold degenerate quantum ground state than in the macroscopically degenerate quantum chiral one. The bipartite entanglement with chiral features completely disappears below or exactly at the critical temperature of the model, while that with no chirality may survive even above the critical temperature of the model. Non-monotonous temperature variations of the concurrence clearly evidence the activation of the entangled Heisenberg states also above classical ground state as well as their re-appearance above the critical temperature of the model.
arXiv comment4 figures
References in corpus (26)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Quantum Computation with Quantum Dots
- Entanglement of a Pair of Quantum Bits
- Scaling of Entanglement close to a Quantum Phase Transitions
- Coupled quantum dots as quantum gates
- Natural Thermal and Magnetic Entanglement in 1D Heisenberg Model
- Dynamics of Entanglement in One-Dimensional Spin Systems
- Thermal entanglement in a two-qubit Heisenberg XXZ spin chain under an inhomogeneous magnetic field
- Enhanced the thermal Entanglement in Anisotropy XYZ Heisenberg Chain
- Threshold temperature for pairwise and many-particle thermal entanglement in the isotropic Heisenberg model
- Entanglement and factorized ground states in two-dimensional quantum antiferromagnets
- The ground state entanglement in the model
- Generalized algebraic transformations and exactly solvable classical-quantum models
- Spin frustration of a spin-1/2 Ising-Heisenberg three-leg tube as an indispensable ground for thermal entanglement
- Thermal Entanglement of a Spin-1/2 Ising-Heisenberg Model on a Symmetrical Diamond Chain
- Induced effects of the Dzyaloshinskii-Moriya interaction on the thermal entanglement in spin-1/2 Heisenberg chains
- Concurrence in the two dimensional XXZ- and transverse field Ising-models
- Direct algebraic mapping transformation for decorated spin models
- Thermal entanglement in a spin-1/2 Ising-XYZ distorted diamond chain with the second-neighbor interaction between nodal Ising spins
- Magnetic Properties and Thermal Entanglement on a Triangulated Kagome Lattice
- Exact Calculation of Entanglement in a 19-site 2D Spin System
- Thermal entanglement in an orthogonal dimer-plaquette chain with alternating Ising-Heisenberg coupling
- Breakdown of intermediate one-half magnetization plateau of spin-1/2 Ising-Heisenberg and Heisenberg branched chains at triple and Kosterlitz-Thouless critical points
- Magnetization plateaus and bipartite entanglement of an exactly solved spin-1/2 Ising-Heisenberg orthogonal-dimer chain
- Frustration phenomenon in the spin-1/2 Ising-Heisenberg planar model of inter-connected trigonal bipyramid structures
- Thermal entanglement of qubit pairs on the Shastry-Sutherland lattice