多列维格纳晶体中缺陷的形成
Formation of defects in multirow Wigner crystals
摘要：
本文研究了准一维经典维格纳晶体的结构性质，该晶体在横向上被抛物势所限制。随着密度的增加，一维晶体首先分裂成锯齿形晶体，然后逐渐出现更多的行。虽然多达四行的基态具有规则的结构，但五行晶体在一定的密度范围内表现出缺陷。我们确定了两个阶段不同类型的缺陷。此外，使用一个简化的模型，我们表明，超过九行没有稳定的规则结构存在。
英文摘要：
We study the structural properties of a quasi-one-dimensional classical Wigner crystal, confined in the transverse direction by a parabolic potential. With increasing density, the one-dimensional crystal first splits into a zigzag crystal before progressively more rows appear. While up to four rows the ground state possesses a regular structure, five-row crystals exhibit defects in a certain density regime. We identify two phases with different types of defects. Furthermore, using a simplified model, we show that beyond nine rows no stable regular structures exist.
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