On two phases inside the Bose condensation dome of Yb$_2$Si$_2$O$_7$
Strongly Correlated Electrons
2021-02-17 v2
Abstract
Recent experimental data on Bose-Einstein Condensation (BEC) of magnons in the spin-gap compound YbSiO revealed an asymmetric BEC dome arXiv:1810.13096v2. We examine modifications to the Heisenberg model on a breathing honeycomb lattice, showing that this physics can be explained by competing forms of weak anisotropy. We employ a gamut of analytical and numerical techniques to show that the anisotropy yields a field driven phase transition from a state with broken Ising symmetry to a phase which breaks no symmetries and crosses over to the polarized limit.
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Cite
@article{arxiv.2001.08219,
title = {On two phases inside the Bose condensation dome of Yb$_2$Si$_2$O$_7$},
author = {Michael O. Flynn and Thomas E. Baker and Siddharth Jindal and Rajiv R. P. Singh},
journal= {arXiv preprint arXiv:2001.08219},
year = {2021}
}