Ballistic current induced effective force on magnetic domain wall

Nano-Micro Letters

K. Xia¹  C. Wang¹ 

关键词: Magnetic domain;    Spin Transfer torque;    Spintronics;    First principle study;   

DOI  :  10.5101/nml.v1i1.p34-39

来源: Open Access House of Science and Technology

【 摘 要 】

nbsp;nbsp;nbsp;Thecollectivedynamicsofmagneticdomainwallunderelectriccurrentisstudiedintheformofspintransfertorque(STT).Theout-of-planeSTTinducedeffectiveforceisobtainedbasedontheLandau-Lifshitz-Gilbert(LLG)equationincludingmicroscopicSTTterms.Therelationbetweenmicroscopiccalculationsandcollectivedescriptionofthedomainwallmotionisestablished.Withournumericalcalculationsbasedontightbindingfreeelectronmodel,wefindthatthenonadiabaticout-of-planetorquecomponentshaveconsiderablenon-localproperties.Itturnsoutthatthecalculatedeffectiveforcesdecaysignificantlywithincreasingdomainwallwidths.

【 授权许可】

Unknown