%0 Journal Article
%T The softening of magnon of two-dimensional insulating ferromagnets at low temperatures<br>低温下二维绝缘铁磁体的磁振子软化
%A Cheng Tai-Min
%A Xian Yu-Ze
%A Du An
%A Zou Jun-Ding
%A <br>成泰民
%A 鲜于泽
%A 杜 安
%A 邹君鼎
%J 物理学报
%D 2005
%I 
%X A magnon-phonon interaction model is applied to two_dimensional insulating ferro magnets. By using Matsubara Green function theory, we have studied the magonon spectrum, and calculated the magnon dispersion curve on the main symmetric point and line in the Brillouin Zone for different parameters of the system. It is con cluded that at the boundary of Brillouin Zone there is a strong broadening in th e magnon linewidth and softening. The influences of longitudinal phonon and tran sverse phonon on the softening and broadening in the magnon linewidth are compar ed, and the influences of the parameters are also illustrated.
%K magnon-phonon interaction
%K softening of magnon mode
%K ferromagnet
%K broadening in the magnon linewidth<br>磁振子-声子相互作用，
%K 磁振子软化，
%K 铁磁体，
%K 磁振子谱线增宽
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=65C48A7424BB5ECC&yid=2DD7160C83D0ACED&vid=318E4CC20AED4940&iid=94C357A881DFC066&sid=7A4D490451ECA9E5&eid=DDBFDE8A1025E4FB&journal_id=1000-3290&journal_name=物理学报&referenced_num=9&reference_num=16