基本信息来源于合作网站,原文需代理用户跳转至来源网站获取       
摘要:
In a recent paper, Lang et al. proposed that edge states and topological phases can be observed in one-dimensional optical superlattices. They showed that the topological phases can be revealed by observing the density profile of a trapped fermion system, which displays plateaus with their positions. However, disorders are not considered in their model. To study the effect of disorders on the topological phases, we introduce random potentials to the model for optical superlattcies. Our calculations show that edge states are robust against the disorders. We find the edge states are very sensitive to the number of the sites in the optical superlattice and we propose a simple rule to describe the relationship between the edge states and the number of sites. The density plateaus are also robust against weak disorders provided that the average density is calculated over a long interval. The widths of the plateaus are proportional to the widths of the bulk energy gaps when there are disorders. The disorders can diminish the bulk energy gaps. So the widths of the plateaus decrease with the increase of disorders and the density plateaus disappear when disorders are too strong. The results in our paper can be used to guide the experimental detection of topological phases in one-dimensional systems.
推荐文章
期刊_丙丁烷TDLAS测量系统的吸收峰自动检测
带间级联激光器
调谐半导体激光吸收光谱
雾剂检漏 中红外吸收峰 洛伦兹光谱线型
期刊_联合空间信息的改进低秩稀疏矩阵分解的高光谱异常目标检测
高光谱图像
异常目标检测 低秩稀疏矩阵分解 稀疏矩阵 残差矩阵
内容分析
关键词云
关键词热度
相关文献总数  
(/次)
(/年)
文献信息
篇名 Effect of disorders on topological phases in one-dimensional optical superlattices
来源期刊 中国物理B(英文版) 学科
关键词 edge state topological phase optical superlattices
年,卷(期) 2016,(7) 所属期刊栏目
研究方向 页码范围 077303-1-077303-5
页数 1页 分类号
字数 语种 英文
DOI 10.1088/1674-1056/25/7/077303
五维指标
传播情况
(/次)
(/年)
引文网络
引文网络
二级参考文献  (0)
共引文献  (0)
参考文献  (0)
节点文献
引证文献  (0)
同被引文献  (0)
二级引证文献  (0)
2016(0)
  • 参考文献(0)
  • 二级参考文献(0)
  • 引证文献(0)
  • 二级引证文献(0)
研究主题发展历程
节点文献
edge state
topological phase
optical superlattices
研究起点
研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
中国物理B(英文版)
月刊
1674-1056
11-5639/O4
北京市中关村中国科学院物理研究所内
eng
出版文献量(篇)
17050
总下载数(次)
0
总被引数(次)
27962
  • 期刊分类
  • 期刊(年)
  • 期刊(期)
  • 期刊推荐
论文1v1指导