5 papers
Large- SU(4) Schwinger boson theory for coupled-dimer antiferromagnets
Shang-Shun Zhang, Yasuyuki Kato, E. A. Ghioldi +3
We develop a systematic large- expansion based on the Schwinger boson representation of SU(4) coherent states of dimers for the paradigmatic spin- bilayer square lattice He…
Thermal decay of two-spinon bound states in quasi-2D triangular antiferromagnets
I. L. Pomponio, E. A. Ghioldi, C. J. Gazza +2
We analyze the temperature evolution of the anomalous magnetic spectrum of the spin-1/2 triangular quantum Heisenberg antiferromagnet, which is proximate to a quantum phase transit…
Singlet polaron theory of low-energy optical excitations in NiPS
I. J. Hamad, C. S. Helman, L. O. Manuel +2
Light-matter interactions can be used as a tool to realize novel many-body states of matter and to study the interplay between electronic and magnetic degrees of freedom. In partic…
Anomalous continuum scattering and higher-order van Hove singularity in the strongly anisotropic S = 1/2 triangular lattice antiferromagnet
Pyeongjae Park, E. A. Ghioldi, Andrew F. May +10
The S = 1/2 triangular lattice antiferromagnet (TLAF) is a paradigmatic example of frustrated quantum magnetism. An ongoing challenge involves understanding the influence of exchan…
1/T_1 nuclear relaxation time of κ-(BEDT-TTF)_ 2 Cu [N(CN)_2] Cl : effects of magnetic frustration
I. J. Hamad, A. E. Trumper, P. Wzietek +2
We study the role played by the magnetic frustration in the antiferromagnetic phase of the organic salt κ-(BEDT-TTF)_ 2 Cu [N(CN)_2] Cl. Using the spatially anisotropic triangular…