简介：Weperformmicromagneticsimulationsontheswitchingofmagneticvortexcorebyusingspin-polarizedcurrentsthroughathree-nanocontactgeometry.Oursimulationresultsshowthatthecurrentcombinationwithanappropriatecurrentflowdirectiondestroysthesymmetryofthetotaleffectiveenergyofthesystemsothatthevortexcorecanbeeasiertoexcite,resultinginlesscriticalcurrentdensityandafasterswitchingprocess.Besidesitsfundamentalsignificance,ourfindingsprovideanadditionalroutetoincorporatingmagneticvortexphenomenaintodatastoragedevices.
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