类石墨烯铁磁自旋波元激发

An Elementary Excitation of Ferromagnetic Graphene-like Spin Wave

在一维自发磁化局域电子自旋波模型的基础上,讨论了类石墨烯光晶格中的自旋粒子的元激发,与立方晶格中的自旋激发的二次方能谱不同,类石墨烯光晶格自旋激发能谱为线性能谱,元激发粒子为无质量的声子,在低温下可以得到磁化强度随T^2变化的规律。

In this paper the elementary excitation of spin wave particles in graphene-like optical lattice is discussed by using spontaneous magnetization localized electron spin wave model.The excitation energy spectrum of grapheme-like optical lattices is linear,which is different from the quadratic energy spectrum of cubic lattices,and its elementary excited particles are massless phonons.The law that magnetization changes with temperature square can be obtained under low temperature.