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Moscow University Physics Bulletin

, Volume 74, Issue 2, pp 176–180 | Cite as

Anti-Resonance in a Laterally Coupled Triple-Quantum-Dot Chain

  • Mengchun Lu
  • Zelong HeEmail author
  • Kongfa Chen
  • Xiaojiang Long
  • Na Liu
Physics of Condensed State of Matter
  • 1 Downloads

Abstract

Employing the nonequilibrium Green’s function technique, electron transport characteristics through a laterally coupled triple-quantum-dot chain are investigated. The conductance versus electron energy is numerically calculated. Two anti-resonance points change into two anti-resonance bands with increasing the size of triple-quantum-dot chain. The widths of two anti-resonance bands are the same and can be regulated via adjusting the inter-dot tunneling coupling strength in the main chain or its attachment. Spin-polarized window emerges due to Zeeman splitting as an external magnetic flux is introduced. Our studies demonstrate that the system can be used as a quantum switch or an efficient spin filtering.

Keywords

quantum dot anti-resonance band quantum switch spin filtering non-equilibrium Green’s function 

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • Mengchun Lu
    • 1
  • Zelong He
    • 1
    Email author
  • Kongfa Chen
    • 2
  • Xiaojiang Long
    • 1
  • Na Liu
    • 1
  1. 1.School of Electronic and Information EngineeringYangtze Normal UniversityChongqingChina
  2. 2.College of Materials Science and EngineeringFuzhou UniversityFuzhou, FujianChina

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