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2010 Volume 26 Issue 10
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2010: Resonance Transmission in Graphene-Nanoribbon-Based Quantum Dot and Superlattice, Chinese Physics Letters, 27(10): 190-193.
Citation: 2010: Resonance Transmission in Graphene-Nanoribbon-Based Quantum Dot and Superlattice, Chinese Physics Letters, 27(10): 190-193.
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Resonance Transmission in Graphene-Nanoribbon-Based Quantum Dot and Superlattice

  • Department of Physics, Yancheng Institute of Technology, Yancheng 224051;Department of Physics and Institute for Nanophysics and Rare-earth Luminescence, Xiangtan University Xiang~an 411105

  • Department of Physics,Yancheng Institute of Technology,Yancheng 224051

  • Department of Physics, Yancheng Institute of Technology, Yancheng 224051

  • Department of Physics and Institute for Nanophysics and Rare-earth Luminescence, Xiangtan University, Xiangtan 411105

  • By using a decomposition elimination method for Green's function, the transport properties of Graphenenanoribbon-based quantum dot (QD) and/or QD superlattice are studied. It is shown that relatively small changes of both QD size and magnetic field intensity can induce strong variations in the electron transmission across the structure. For a QD device, electrons can be either totally reflected or totally transmitted through the QD region at some energies, and the quasibound peaks have been observed to have a small shift due to quasibound state energy varying. In the case of QD superlattice, the electrons within the miniband energy region can transmit through a device, similar to a QD device. Therefore, the transmission spectrum can be tailored to match with requirement by modulating the size of quantum dot and the number P of superlattice.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Resonance Transmission in Graphene-Nanoribbon-Based Quantum Dot and Superlattice

Abstract: By using a decomposition elimination method for Green's function, the transport properties of Graphenenanoribbon-based quantum dot (QD) and/or QD superlattice are studied. It is shown that relatively small changes of both QD size and magnetic field intensity can induce strong variations in the electron transmission across the structure. For a QD device, electrons can be either totally reflected or totally transmitted through the QD region at some energies, and the quasibound peaks have been observed to have a small shift due to quasibound state energy varying. In the case of QD superlattice, the electrons within the miniband energy region can transmit through a device, similar to a QD device. Therefore, the transmission spectrum can be tailored to match with requirement by modulating the size of quantum dot and the number P of superlattice.

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