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Non-adiabatic charge pump: an exact solution | Baigeng Wang
; Jian Wang
; Hong Guo
; | Date: |
24 Nov 2002 | Journal: | Phys. Rev. B Vol.68, 155326 (2003) | Subject: | cond-mat | Abstract: | We derived a general and exact expression of current for quantum parametric charge pumps in the non-adiabatic regime at finite pumping frequency and finite driving amplitude. The non-perturbative theory predicts a remarkable plateau structure in the pumped current due to multi-photon assisted processes in a double-barrier quantum well pump involving only a {it single} pumping potential. It also predicts a current reversal as the resonant level of the pump crosses the Fermi energy of the leads. | Source: | arXiv, cond-mat/0211536 | Services: | Forum | Review | PDF | Favorites |
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