66 citations · 66 across the 2 of their papers we have counts for
4 papers · 1 filter
Spin-wave velocities, density of magnetic excitations, and NMR relaxation in ferro-pnictides
Andrew Ong, Goetz S. Uhrig, Oleg P. Sushkov
We perform an analysis of the experimentally known temperature dependence of the staggered magnetization in the antiferromagnetic phase. This analysis allows us to put an upper lim…
Spectral Properties of Magnetic Excitations in Cuprate Two-Leg Ladder Systems
Kai P. Schmidt, Goetz S. Uhrig
This article summarizes and extends the recent developments in the microscopic modeling of the magnetic excitations in cuprate two-leg ladder systems. The microscopic Hamiltonian c…
The Structure of Operators in Effective Particle-Conserving Models
Christian Knetter, Kai P. Schmidt, Goetz S. Uhrig
For many-particle systems defined on lattices we investigate the global structure of effective Hamiltonians and observables obtained by means of a suitable basis transformation. We…
Thermodynamic Properties of Spin Ladders with Cyclic Exchange
Alexander Buehler, Ute Loew, Kai P. Schmidt +1
By high temperature series expansion and exact complete diagonalization the magnetic susceptibility chi(T) and the specific heat C(T) of a two-leg S=1/2 ladder with cyclic (4-spin)…