Spin-wave interaction in low-dimensionality Heisenberg magnetic materials
Kosevich Yu. A., Chubukov A. V.
Logarithmic divergences of the fluctuational corrections to the spin-wave spectra are found by a microscopic approach. These are quantum-mechanical corrections for one-dimensional (ID) antiferromagnets and classical corrections for 2D ferromagnets and antiferromagnets. The temperature corrections to the spectrum of a 3D antiferromagnet is shown to behave ос Τ4 In T.