447 citations · 3.8k across the 103 of their papers we have counts for
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cond-mat1998★ 35 cited
The Kosterlitz-Thouless and magnetic transition temperatures in layered magnets with a weak easy-plane anisotropy
V. Yu. Irkhin, A. A. Katanin
The two-dimensional (2D) Heisenberg magnet with a weak easy-plane anisotropy is considered. A renormalization group (RG) analysis in this model is performed for both quantum and cl…
cond-mat1998★ 11 cited
Quantum phase transitions and thermodynamic properties in highly anisotropic magnets
V. Yu. Irkhin, A. A. Katanin
The systems exhibiting quantum phase transitions (QPT) are investigated within the Ising model in the transverse field and Heisenberg model with easy-plane single-site anisotropy.…