22 citations · 50 across the 4 of their papers we have counts for
4 papers
Effective spin-wave action for ordered Heisenberg antiferromagnets in a magnetic field
Nils Hasselmann, Florian Schuetz, Ivan Spremo +1
We derive the effective long-wavelength Euclidean action for the antiferromagnetic spin-waves of ordered quantum antiferromagnets subject to a uniform magnetic field. We point out…
Magnetic properties of a metal-organic antiferromagnet on a distorted honeycomb lattice
Ivan Spremo, Florian Schuetz, Peter Kopietz +6
For temperatures T well above the ordering temperature T*=3.0+-0.2K the magnetic properties of the metal-organic material Mn[C10H6(OH)(COO)]2x2H20 built from Mn^2+ ions and 3-hydro…
Spin-wave theory at constant order parameter
Marcus Kollar, Ivan Spremo, Peter Kopietz
We derive the low-temperature properties of spin-S quantum Heisenberg magnets from the Gibbs free energy G(M) for fixed order parameter M. Assuming that the low-lying elementary ex…
Comment on "Spin Dynamics of the 2D Spin 1/2 Quantum Antiferromagnet Copper Deuteroformate Tetradeuterate (CFTD)"
Peter Kopietz, Ivan Spremo
Comment on "Spin Dynamics of the 2D Spin 1/2 Quantum Antiferromagnet Copper Deuteroformate Tetradeuterate (CFTD)", H. M. Ronnow et al., Phys. Rev. Lett. 87, 037202 (2001)