Energy landscape of two-dimensional lattice polymers
Energy landscape of two-dimensional lattice polymers
复制标题
二维晶格聚合物的能量景观
DOI：
10.1021/jp020316o
复制
发表时间：
2002
影响因子：
2.9
通讯作者：
J. C. Schön
中科院分区：
文献类型：
--
作者：
J. C. Schön
利用LID算法研究了二维晶格聚合物的能量分布。我们发现，大量的口袋周围的局部能量最小值存在，表现出近似指数增长的局部状态密度。这种行为类似于例如二维和三维共价晶格网络的能量景观和自旋玻璃的能量景观。然而，与这些系统相比，我们发现存在两类聚合物景观，这取决于聚合物的长度。因此，短的聚合物似乎显示出更“类液体”的行为，而长的聚合物更接近玻璃态共价网络。
The energy landscape of two-dimensional lattice polymers is investigated, using the so-called lid algorithm. We find that a multitude of pockets around local energy minima exist that exhibit approximately exponentially growing local densities of states. This behavior is similar to the energy landscape of e.g. two- and three-dimensional covalent lattice networks and the energy landscape of spin glasses. However, in contrast to these systems, we find that two classes of polymer landscapes exist, depending on the length of the polymers. As a consequence, short polymers appear to show a much more "liquidlike" behavior, while long polymers resemble much more closely the glassy covalent networks.