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Electron Transport Through a Quantum Wire with a Side-Coupled Quantum Dot: Fano Resonance |
| XIONG Yong-Jian; HE Zhou-Bo |
| Key Laboratory of Nano Materials of Ningbo and Department of Physics, Ningbo University, Ningbo 315211 |
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| Cite this article: |
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XIONG Yong-Jian, HE Zhou-Bo 2004 Chin. Phys. Lett. 21 1802-1804 |
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Abstract The Fano resonance of a quantum wire (QW) with a side-coupled quantum dot (QD) is investigated. The QD has multilevel and is in the Coulomb blockade regime. We show that there are two aspects in contribution to asymmetric Fano dip line shape of conductance: (1) the quantum interference between the resonant level and non-resonant levels, (2) the asymmetric electron occupation of levels in the two sides of a resonant level in the QD. The smearing of the asymmetry of the dip structure with the increasing temperature is partially attributed to fluctuation of electron state in the QD.
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| Keywords:
73.63.Kv
73.23.Hk
72.15.Qm
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Published: 01 September 2004
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| PACS: |
73.63.Kv
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(Quantum dots)
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73.23.Hk
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(Coulomb blockade; single-electron tunneling)
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72.15.Qm
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(Scattering mechanisms and Kondo effect)
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