Finite temperature orbital and spin magnetism of small Fe linear chains.

摘要: The finite temperature spin and orbital magnetism of FeN linear chains is theoretically studied in the framework a fluctuation theory based on realistic d-band model Hamiltonian, which includes spin–orbit coupling interaction non-perturbative way. Spin magnetic moments are calculated as function by using an exchange Monte Carlo method that takes into account full way short-range order. anisotropy effects cluster moment values analysed considering magnetization directions perpendicular to along chain axis. dependence follows general trend similar one shows clear at low intermediate temperatures, before total thermal disorder appears. Interesting driven fluctuations also observed for results most systems.