...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures >Optical-absorption spectra of single-layer graphene in a periodic magnetic field
【24h】

Optical-absorption spectra of single-layer graphene in a periodic magnetic field

机译：单层石墨烯在周期性磁场中的光吸收光谱

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The low-frequency magnetoelectronic properties of single-layer graphene in a periodic magnetic field are studied by the gradient approximation within the Peierls tight-binding model. A modulated magnetic field along the zigzag direction is chosen for a detailed investigation of optical absorption spectra. The electric polarization is taken to be perpendicular to the modulated direction. The absorption spectra exhibit many prominent and inconspicuous asymmetric peaks. They result from the transitions of the original and extra band-edge states, respectively. The prominent peaks are discussed in detail and they obey a simple optical selection rule, Δn=|nv-nc|=1, similar to that in a uniform magnetic field. Such a rule can be ascribed to certain characteristics of the wave functions. The energy of the prominent peaks strongly depends on the strength, while it exhibits little dependence on the period. The abovementioned results can be verified by optical measurements.
机译：通过在Peierls紧束缚模型中的梯度近似研究了单层石墨烯在周期性磁场中的低频磁电子性质。选择沿之字形方向的调制磁场用于光学吸收光谱的详细研究。认为电极化垂直于调制方向。吸收光谱显示许多突出和不明显的不对称峰。它们分别来自原始带边缘状态和额外带边缘状态的转换。对突出的峰进行了详细讨论，它们遵循简单的光学选择规则Δn= | nv-nc | = 1，类似于均匀磁场中的规则。这样的规则可以归因于波动函数的某些特征。突出峰的能量在很大程度上取决于强度，而对周期的依赖性很小。上述结果可以通过光学测量来验证。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号