Zitterbewegung and quantum revivals in monolayer graphene quantum dots in magnetic fields

被引：20

作者：

Garcia, Trinidad ^{[1
]}

Cordero, Nicolas A. ^{[2
]}

Romera, Elvira ^{[3
,4
]}

机构：

[1] Univ Granada, Dept Elect & Comp Technol, E-18071 Granada, Spain

[2] Univ Burgos, Dept Phys, Burgos, Spain

[3] Univ Granada, Dept Fis Atom Mol & Nucl, E-18071 Granada, Spain

[4] Univ Granada, Inst Carlos Fis Teor & Computac 1, E-18071 Granada, Spain

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 07期

关键词：

FRACTIONAL REVIVALS; COLLAPSE;

D O I：

10.1103/PhysRevB.89.075416

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The wave-packet evolution in graphene quantum dots in magnetic fields has been theoretically studied. By analyzing an effective Hamiltonian model we show the wave-packet dynamics exhibits three types of periodicities (Zitterbewegung, classical, and revival times). The influence of the size of the quantum dot and the strength of the external magnetic field in these periodicities has been considered. In addition, we have found that valley degeneracy breaking is shown by both classical and revival times.

引用

页数：7

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