Direct Perturbation Theory on the Electron Spin Resonance Shift and Its Applications

Yoshitaka Maeda, Masaki Oshikawa
2005 Journal of the Physical Society of Japan  
We formulate a direct and systematic perturbation theory on the shift of the main paramagnetic peak in Electron Spin Resonance, and derive a general expression up to second order. It is applied to one-dimensional XXZ and transverse Ising models in the high field limit, to obtain explicit results including the polarization dependence for arbitrary temperature.
doi:10.1143/jpsj.74.283 fatcat:coa4oses2zgtflbvecrnasswzy