• 文献标题:   Valley-dependent beams controlled by pseudomagnetic field in distorted photonic graphene
  • 文献类型:   Article
  • 作  者:   DENG FS, LI YM, SUN Y, WANG X, GUO ZW, SHI YL, JIANG HT, CHANG K, CHEN H
  • 作者关键词:  
  • 出版物名称:   OPTICS LETTERS
  • ISSN:   0146-9592 EI 1539-4794
  • 通讯作者地址:   Tongji Univ
  • 被引频次:   8
  • DOI:   10.1364/OL.40.003380
  • 出版年:   2015

▎ 摘  要

The generation and control of valley pseudospin currents are the core of valleytronics. Here, the photonic analogy for generation and control of valley pseudospin currents using the pseudomagnetic fields induced in strained graphene is investigated in a microwave regime. In photonic graphene with uniaxial distortion, photons in two different valleys experience pseudomagnetic fields with opposite signs, and valley-dependent propagations in bended paths are observed. The external-field-free photonic transportation behavior may be very useful in controlling the flow of light in future valley-polarized devices. (C) 2015 Optical Society of America