We study the magnetization reversal of single-molecular magnets by a spin-polarized current in the framework of the spinor Boltzmann equation.Because of the spin–orbit coupling,the spin-polarized current will impose ...We study the magnetization reversal of single-molecular magnets by a spin-polarized current in the framework of the spinor Boltzmann equation.Because of the spin–orbit coupling,the spin-polarized current will impose a non-zero spin transfer torque on the single-molecular magnets,which will induce the magnetization switching of the latter.Via the s–d exchange interaction between the conducting electrons and single-molecular magnets,we can investigate the magnetization dynamics of single-molecular magnets.We demonstrate the dynamics of the magnetization based on the spin diffusion equation and the Heisenberg-like equation.The results show that when the current is large enough,the magnetization of the single-molecular magnets can be reversed.We also calculate the critical current density required for the magnetization reversal under different anisotropy and external magnetic fields,which is helpful for the corresponding experimental design.展开更多
基金Supported by the National Key R&D Program of China(Grant No.2018YFA0305804)the National Natural Science Foundation of China(Grant No.11834014the Strategetic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB28000000).
文摘We study the magnetization reversal of single-molecular magnets by a spin-polarized current in the framework of the spinor Boltzmann equation.Because of the spin–orbit coupling,the spin-polarized current will impose a non-zero spin transfer torque on the single-molecular magnets,which will induce the magnetization switching of the latter.Via the s–d exchange interaction between the conducting electrons and single-molecular magnets,we can investigate the magnetization dynamics of single-molecular magnets.We demonstrate the dynamics of the magnetization based on the spin diffusion equation and the Heisenberg-like equation.The results show that when the current is large enough,the magnetization of the single-molecular magnets can be reversed.We also calculate the critical current density required for the magnetization reversal under different anisotropy and external magnetic fields,which is helpful for the corresponding experimental design.
