Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chung, SW | en_US |
dc.contributor.author | Tang, CS | en_US |
dc.contributor.author | Chu, CS | en_US |
dc.contributor.author | Chang, CY | en_US |
dc.date.accessioned | 2019-04-03T06:37:40Z | - |
dc.date.available | 2019-04-03T06:37:40Z | - |
dc.date.issued | 2004-08-01 | en_US |
dc.identifier.issn | 2469-9950 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevB.70.085315 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/26496 | - |
dc.description.abstract | We study the pumping effects, in both the adiabatic and nonadiabatic regimes, of a pair of finite finger-gate array (FGA) on a narrow channel. Connection between the pumping characteristics and associated mechanisms is established. The pumping potential is generated by ac biasing the FGA pair. For a single pair (N=1) of finger gates (FG's), the pumping mechanism is due to the coherent inelastic scattering of the traversing electron to its subband threshold. For a pair of FGA with pair number N>2, the dominant pumping mechanism becomes that of the time-dependent Bragg reflection. The contribution of the time-dependent Bragg reflection to the pumping is enabled by breaking the symmetry in the electron transmission when the pumping potential is of a predominant propagating type. This propagating wave condition can be achieved both by an appropriate choice of the FGA pair configuration and by the monitoring of a phase difference phi between the ac biases in the FGA pair. The robustness of such a pumping mechanism is demonstrated by considering a FGA pair with only pair number N=4. | en_US |
dc.language.iso | en_US | en_US |
dc.title | Finger-gate array quantum pumps: Pumping characteristics and mechanisms | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1103/PhysRevB.70.085315 | en_US |
dc.identifier.journal | PHYSICAL REVIEW B | en_US |
dc.citation.volume | 70 | en_US |
dc.citation.issue | 8 | en_US |
dc.citation.spage | 0 | en_US |
dc.citation.epage | 0 | en_US |
dc.contributor.department | 電子物理學系 | zh_TW |
dc.contributor.department | 電機學院 | zh_TW |
dc.contributor.department | Department of Electrophysics | en_US |
dc.contributor.department | College of Electrical and Computer Engineering | en_US |
dc.identifier.wosnumber | WOS:000223716700067 | en_US |
dc.citation.woscount | 16 | en_US |
Appears in Collections: | Articles |
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