Quasi-energy spectra of a charged particle in planar honeycomb lattices

doi:10.1088/1367-2630/11/6/063032

CORC > 北京大学 > 工学院

	Quasi-energy spectra of a charged particle in planar honeycomb lattices
	Zhang, Wei ; Zhang, Ping ; Duan, Suqing ; Zhao, Xian-geng
刊名	新物理学学报
	2009
关键词	DYNAMIC LOCALIZATION OPTICAL POTENTIALS DIRAC FERMIONS ELECTRIC-FIELD GRAPHENE AC SUPERLATTICES MOTION WAVE
DOI	10.1088/1367-2630/11/6/063032
英文摘要	The low-energy spectrum of a particle in planar honeycomb lattices is conical, which leads to the unusual electronic properties of graphene. In this paper, we calculate the quasi-energy spectra of a charged particle in honeycomb lattices driven by a strong ac field, which is of fundamental importance for its time-dependent dynamics. We find that depending on the amplitude, direction and frequency of the external field, many interesting phenomena may occur, including band collapse, renormalization of the velocity of 'light', gap opening etc. Under suitable conditions, by increasing the magnitude of the ac field, a series of phase transitions from gapless phases to gapped phases appear alternately. At the same time, the Dirac points may disappear or change to a line. We suggest possible realization of the system in honeycomb optical lattices.; Physics, Multidisciplinary; SCI(E); EI; 13; ARTICLE; 11
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/396953]
专题	工学院
推荐引用方式 GB/T 7714	Zhang, Wei,Zhang, Ping,Duan, Suqing,et al. Quasi-energy spectra of a charged particle in planar honeycomb lattices[J]. 新物理学学报,2009.
APA	Zhang, Wei,Zhang, Ping,Duan, Suqing,&Zhao, Xian-geng.(2009).Quasi-energy spectra of a charged particle in planar honeycomb lattices.新物理学学报.
MLA	Zhang, Wei,et al."Quasi-energy spectra of a charged particle in planar honeycomb lattices".新物理学学报 (2009).