27 citations · 51 across the 6 of their papers we have counts for
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Magnetic order in the quasi-two-dimensional easy-plane XXZ model
D. Ihle, C. Schindelin, H. Fehske
A Green's-function theory of antiferromagnetic short-range and long-range order (LRO) in the quasi-two-dimensional easy-plane XXZ model is presented. As the main new result…
Quantum to classical crossover in the 2D easy-plane XXZ model
H. Fehske, C. Schindelin, A. Weiße +2
Ground-state and thermodynamical properties of the spin-1/2 two-dimensional easy-plane XXZ model are investigated by both a Green's-function approach and by Lanczos diagonalization…
Spin correlation functions and susceptibilities in the easy-plane XXZ chain
C. Schindelin, H. Fehske, H. Büttner +1
We present a Green's-function theory of magnetic short-range order in the easy-plane XXZ chain based on the projection method for the dynamic spin susceptibility and a deco…
Spin correlation functions and Néel order in the 2D Heisenberg model: Effects of spatial anisotropy
C. Schindelin, D. Ihle, S. -L. Drechsler +1
The ground-state properties of the square-lattice spin-1/2 Heisenberg antiferromagnet with spatially anisotropic couplings are investigated by Green's-function projection approache…
Magnetic Order-Disorder Transition in the Two-Dimensional Spatially Anisotropic Heisenberg Model at Zero Temperature
D. Ihle, C. Schindelin, A. Weisse +1
The ground-state properties of the spin-1/2 antiferromagnetic Heisenberg model with spatially anisotropic couplings on a square lattice are investigated by a spin-rotation-invarian…