Electromagnetic instability of the Thomson problem

被引：8
作者：
De Luca, J
Rodrigues, SB
Levin, Y
机构：
[1] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil
[2] Univ Fed Sao Carlos, Dept Matemat, BR-13565905 Sao Carlos, SP, Brazil
[3] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil
来源：
EUROPHYSICS LETTERS | 2005年 / 71卷 / 01期
关键词：
D O I：
10.1209/epl/i2004-10537-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The classical Thomson problem of n charged particles confined to the surface of a sphere of radius a is analyzed within the Darwin approximation of electrodynamics. For n < n(c)(a), the ground state corresponds to a hexagonal Wigner crystal with a number of topological defects. However, if n > nc(a) the Wigner lattice is unstable with respect to small perturbations and the ground state becomes spontaneously magnetized for finite n.
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页码：84 / 90
页数：7
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