CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Quantum Confinement Effects in Dynamically Screened Quasi-One-Dimensional Systems |
WANG Ting-Dong1,2, HUAI Ping1** |
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 2University of Chinese Academy of Sciences, Beijing 100049
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Cite this article: |
WANG Ting-Dong, HUAI Ping 2013 Chin. Phys. Lett. 30 067201 |
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Abstract We theoretically study the quantum confinement effects on the self-energies of electrons and holes in quasi-one-dimensional semiconductor systems. It is found that the effective Coulomb interactions are enhanced with the increase in lateral confinement and the decrease in confinement size. The single-particle self-energies of electrons and holes are calculated in dynamic plasmon pole approximation within the GW approximation, where G refers to Green's function and W is the dynamically screened Coulomb interaction. The real and imaginary parts of the self-energies have a strong dependence on the effective Coulomb interactions.
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Received: 21 January 2013
Published: 31 May 2013
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PACS: |
72.10.-d
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(Theory of electronic transport; scattering mechanisms)
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78.66.Fd
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(III-V semiconductors)
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78.67.Lt
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(Quantum wires)
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68.65.La
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(Quantum wires (patterned in quantum wells))
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Abstract
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