摘要
The quantum simulation model and the self-consistent computational algorithm we proposed two years ago are utilized to investigate the physical properties of a magnetic nanowire consisting of 3𝑒ions which are coupled antiferromagnetically.In the absence of the external magnetic field,all simulations are started from a spin configuration with all moments in the nanosample randomly oriented and performed from a temperature above the magnetic transition temperature𝑈M down to very low temperature as carried out by previous researchers using the Monte Carlo method,and such obtained results are all physically reasonable,verifying the correctness of the simulation model and computing algorithm.In addition,our calculated results suggest that increasing the surface anisotropy enables an increase in the magnetic transition temperature,although less effectively than by enhancing the Heisenberg exchange strength directly.
基金
Supported by the National Natural Science Foundation of China under Grant Nos 11274177,1105075,1104146,10804053 and 11047143.
