Long-range magnetic order and the Darwin Lagrangian

被引：0

作者：

Mehra, Vishal ^{[1
]}

De Luca, Jayme ^{[1
]}

机构：

[1] Departamento de Física, Universidade Federal de São Carlos, Rod. Washington Luiz km 235, 13565-905, Caixa Postal 676, São Carlos,SP, Brazil

来源：

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | 2000年 / 61卷 / 02期

关键词：

Kinetics - Kinetic energy;

D O I：

暂无

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学科分类号：

摘要：

We simulate a finite system of N confined electrons with inclusion of the Darwin magnetic interaction in two and three dimensions. The lowest-energy states are located using the steepest descent quenching adapted for velocity dependent potentials. Below a critical density the ground state is a static Wigner lattice. For supercritical density the ground state has a nonzero kinetic energy. The critical density decreases with N for exponential confinement but not for harmonic confinement. The lowest-energy state also depends on the confinement and dimension: an antiferromagnetic cluster forms for harmonic confinement in two dimensions. ©2000 The American Physical Society.

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页码：1199 / 1205