Transient Zitterbewegung of graphene superlattices

被引：10

作者：

Wang, Qing ^{[1
]}

Shen, R.

Sheng, L.

Wang, B. G.

Xing, D. Y.

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

PHYSICAL REVIEW A | 2014年 / 89卷 / 02期

基金：

中国国家自然科学基金;

关键词：

DIRAC FERMIONS;

D O I：

10.1103/PhysRevA.89.022121

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate Zitterbewegung (ZB) behavior in a graphene superlattice with generations of massless Dirac fermions having highly anisotropic group velocities, which results from a graphene subject to one-dimensional periodic potentials. It is shown that with tuning parameters of the periodic potential, the frequency of ZB oscillations can be of order 10(12) Hz, the amplitude can increase to hundreds of angstroms, and their attenuation can become much slower. The required parameters of the graphene superlattice can be realized under current experimental conditions, thus providing a good system for probing the ZB effect experimentally.

引用

页数：4

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