One-dimensional gapless magnons in a single anisotropic ferromagnetic nanolayer

2019-12-29 19:51:52

magnetic spin dependent anisotropy magnons

责任者: Ferrer, A.V.;Farinas, P.F.;Caldeira, A.O. 单位: Inst. de Fisica, Univ. Estadual de Campinas, Sao Paulo, Brazil 来源出处: Physical Review Letters(Phys. Rev. Lett. (USA)),2003/11/28,91(22):226803-1 摘要: Gapless magnons in a plane ferromagnet with normal axis anisotropy are shown to exist besides the usual gapped modes that affect spin dependent transport properties only above a finite temperature. These magnons are one-dimensional objects, in the sense that they are localized inside the domain walls that form in the film. They may play an essential role in the spin dependent scattering processes even down to very low temperatures 关键词: ferromagnetism;magnetic anisotropy;magnetic domain walls;magnetic thin films;magnons;nanostructured materials;one-dimensional gapless magnons;single anisotropic ferromagnetic nanolayer;normal axis anisotropy;spin dependent transport properties;domain walls;spin dependent scattering processes