We examine the entanglement of the ground state of a 16-site spin-1/2 pyrochlore cluster in the quantum spin ice regime via various calculations of I-concurrence. Exact ground state solutions to a quantum spin Hamiltonian with four nearest-neighbour exchange parameters were obtained using exact diagonalization. We present results for the ground state I-concurrence in a region within the parameter space of the model where the ground state is a singlet. We discuss variations in the I-concurrence in the context of the composition of the ground state and we demonstrate how a lattice distortion disentangles the state.
@article{arxiv.2409.09576,
title = {Concurrence and entanglement on a 16-site spin-1/2 pyrochlore cluster},
author = {C. Wei and S. H. Curnoe},
journal= {arXiv preprint arXiv:2409.09576},
year = {2025}
}