103 citations · 212 across the 5 of their papers we have counts for
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Hydrodynamic relation in 2D Heisenberg antiferromagnet in a field
A. L. Chernyshev, M. E. Zhitomirsky
The spin-stiffness ρ_s of a 2D Heisenberg antiferromagnet depends non-analytically on external magnetic field. We demonstrate that the hydrodynamic relation between ρ_s, the unifor…
Interplay of anisotropy and frustration: triple transitions in a triangular-lattice antiferromagnet
P. -É. Melchy, M. E. Zhitomirsky
The classical Heisenberg antiferromagnet on a triangular lattice with the single-ion anisotropy of the easy-axis type is theoretically investigated. The mean-field phase diagram in…
Magneto-thermal properties of the spin-s Heisenberg antiferromagnet on the cuboctahedron
A. Honecker, M. E. Zhitomirsky
We use the example of the cuboctahedron, a highly frustrated molecule with 12 sites, to study the approach to the classical limit. We compute magnetic susceptibility, specific heat…
Quantum fluctuations in high field magnetization of 2D square lattice J1-J2 antiferromagnets
P. Thalmeier, M. E. Zhitomirsky, B. Schmidt +1
The J1-J2 square lattice Heisenberg model with spin S=1/2 has three phases with long-range magnetic order and two unconventionally ordered phases depending on the ratio of exchange…
Magnon Decay in Noncollinear Quantum Antiferromagnets
A. L. Chernyshev, M. E. Zhitomirsky
Instability of the excitation spectrum of an ordered noncollinear Heisenberg antiferromagnet (AF) with respect to spontaneous two-magnon decays is investigated. We use a spin-1/2 A…