arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0801.1453cond-mat.softcond-mat.mtrl-sci
收藏

二维二元Yukawa混合物中的二元晶体

Binary crystals in two-dimensional two-component Yukawa mixtures

Lahcen Assoud, Rene Messina, Hartmut Loewen

摘要:

计算了通过屏蔽库仑对势相互作用的二元混合粒子的零温相图,该相图是组成和电荷比的函数。通过Lekner求和获得的势能在各种候选二维晶体中最小化。鉴定了大量不同的稳定晶体结构,包括$A,B,AB_2, A_2B, AB_4$结构[ $A$ $(B)$颗粒对应于大(小)电荷]。它们的基本单元由$A$颗粒的三角形、正方形或菱形晶格组成,基底包括$A$和$B$颗粒的各种结构。对于小的电荷不对称性,除了纯的$A$和$B$三角形晶体之外,没有中间晶体。

英文摘要:

The zero-temperature phase diagram of binary mixtures of particles interacting via a screened Coulomb pair potential is calculated as a function of composition and charge ratio. The potential energy obtained by a Lekner summation is minimized among a variety of candidate two-dimensional crystals. A wealth of different stable crystal structures is identified including $A,B,AB_2, A_2B, AB_4$ structures [$A$ $(B)$ particles correspond to large (small) charge.] Their elementary cells consist of triangular, square or rhombic lattices of the $A$ particles with a basis comprising various structures of $A$ and $B$ particles. For small charge asymmetry there are no intermediate crystals besides the pure $A$ and $B$ triangular crystals.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑