%0 Journal Article
%T Existence and Stability of Two-Dimensional Compact-Like Discrete Breathers in Discrete Two-Dimensional Monatomic Square Lattices
%A XU Quan
%A TIAN Qiang
%A <br>徐权
%A 田强
%J 中国物理快报
%D 2007
%I 
%X Two-dimensional compact-like discrete breathers in discrete two-dimensional monatomic square lattices are investigated by discussing a generalized discrete two-dimensional monatomic model. It is proven that the two- dimensional compact-like discrete breathers exist not only in two-dimensional soft Φ4 potentials but also in hard two-dimensional Φ4 potentials and pure two-dimensional K4 lattices. The measurements of the two-dimensional compact-like discrete breather cores in soft and hard two-dimensional Φ4 potential are determined by coupling parameter K4, while those in pure two-dimensional K4 lattices have no coupling with parameter K4. The stabilities of the two-dimensional compact-like discrete breathers correlate closely to the coupling parameter K4 and the boundary condition of lattices.
%K 05
%K 45
%K Xt
%K 02
%K 30
%K Jr
%K 63
%K 20
%K Pw
%K 63
%K 20
%K Ry<br>存在性
%K 稳定性
%K 离散装置
%K 晶格
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=FC50665EDA81BDE7BC052EACFB02B1E7&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=59906B3B2830C2C5&sid=5CEA67B6F0808E47&eid=0D60B631F649BBFD&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=18