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- Title
Broadening of Fano Resonance in Electronic Current Through a Quantum Dot by Dephasing.
- Authors
Xiong, Yong-Jian; Xiong, Shi-Jie
- Abstract
We investigate the Fano line shape in electron transport through a quantum clot in presence of dephasing. The dephasing effect is introduced by the Büttiker model. We derive a generalized Fano formula for the conductance that includes the components of the standard Fano line shape and the Breit-Wigner line shape. According to this formula the Fano parameter q decreases when the dephasing strength increases by increasing the temperature. The increase of the half width of the resonance peak by increasing the temperature measured by Zacharia et al. [Phys. Rev. B64, 155311 (2001)] which is more rapid than expected from the ordinary theories is possibly attributed to the dephasing.
- Subjects
QUANTUM dots; ELECTRON transport; ATOMS; RESONANCE
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2002, Vol 16, Issue 10, p1479
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979202011032