Parametric pumping at finite frequency

Physical Review B - Condensed Matter and Materials Physics

Volumn 65, Issue 7, 2002, Pages 1-4

  Wang, Baigeng ^a   Wang, Jian ^a   Guo, Hong ^b  

^a UNIVERSITY OF HONG KONG   (Hong Kong)

^b MCGILL UNIVERSITY   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84866371691     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.65.073306     Document Type: Article

References (21)

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10. We focus on developing a nonadiabatic theory, which is crucial in understanding the (formula presented) experimental anomaly, rather than on the chaotic nature of the quantum dot in the pump of Ref. 2.
11. Since the pumping potential in the scattering region is position dependent, it is easiest to work in a real-space tight-binding representation rather than in the momentum space. The scattering region has N sites. In the numerics we choose (formula presented) to make sure the convergence of results.
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16. If (formula presented) is closer to (formula presented) the interference effect will be drastically enhanced. For instance, we have (formula presented) for (formula presented) and (formula presented) as compared with (formula presented) for (formula presented) and (formula presented) shown in the right inset of Fig. 22.
17. If the double barrier is asymmetric, the pumped current will be suppressed.
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19. In the numerics we set units as (formula presented). For a system fabricated by GaAs with (formula presented), which corresponds to the linear dimension of the quantum dot in the experiment of Ref. 2, our energy unit is (formula presented).
20. The strong-pumping regime has been considered in Y.D. Wei, et al., Phys. Rev. B 62, 9947 (2000).
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