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- Publisher Website: 10.1103/PhysRevB.65.073306
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- WOS: WOS:000174030900013
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Article: Parametric pumping at finite frequency
| Title | Parametric pumping at finite frequency |
|---|---|
| Authors | |
| Keywords | Physics |
| Issue Date | 2002 |
| Publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ |
| Citation | Physical Review B (Condensed Matter), 2002, v. 65 n. 7, article no. 073306 How to Cite? |
| Abstract | We report a first-principles theory for analyzing the parametric electron pump at finite frequency. The pump is controlled by two pumping parameters with phase difference φ. In the zero-frequency limit, our theory recovers the well-known adiabatic result that the pumped current I(φ)∼sin φ. At a finite frequency, it predicts I(φ=0)≠0 while I(φ=π)≈0, consistent with recent experimental data. We discuss a possible mechanism behind the nonzero pumped current at φ=0 from photon-assisted processes. |
| Persistent Identifier | http://hdl.handle.net/10722/43337 |
| ISSN | |
| ISI Accession Number ID |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Wang, B | en_HK |
| dc.contributor.author | Wang, J | en_HK |
| dc.contributor.author | Guo, H | en_HK |
| dc.date.accessioned | 2007-03-23T04:43:50Z | - |
| dc.date.available | 2007-03-23T04:43:50Z | - |
| dc.date.issued | 2002 | en_HK |
| dc.identifier.citation | Physical Review B (Condensed Matter), 2002, v. 65 n. 7, article no. 073306 | - |
| dc.identifier.issn | 0163-1829 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/43337 | - |
| dc.description.abstract | We report a first-principles theory for analyzing the parametric electron pump at finite frequency. The pump is controlled by two pumping parameters with phase difference φ. In the zero-frequency limit, our theory recovers the well-known adiabatic result that the pumped current I(φ)∼sin φ. At a finite frequency, it predicts I(φ=0)≠0 while I(φ=π)≈0, consistent with recent experimental data. We discuss a possible mechanism behind the nonzero pumped current at φ=0 from photon-assisted processes. | en_HK |
| dc.format.extent | 71957 bytes | - |
| dc.format.extent | 25600 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.format.mimetype | application/msword | - |
| dc.language | eng | en_HK |
| dc.publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ | en_HK |
| dc.relation.ispartof | Physical Review B (Condensed Matter) | - |
| dc.rights | Copyright 2002 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.65.073306 | - |
| dc.subject | Physics | en_HK |
| dc.title | Parametric pumping at finite frequency | en_HK |
| dc.type | Article | en_HK |
| dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=65&issue=7&spage=073306:1&epage=4&date=2002&atitle=Parametric+pumping+at+finite+frequency | en_HK |
| dc.description.nature | published_or_final_version | en_HK |
| dc.identifier.doi | 10.1103/PhysRevB.65.073306 | en_HK |
| dc.identifier.scopus | eid_2-s2.0-4243868232 | - |
| dc.identifier.hkuros | 65402 | - |
| dc.identifier.volume | 65 | - |
| dc.identifier.issue | 7 | - |
| dc.identifier.spage | article no. 073306 | - |
| dc.identifier.epage | article no. 073306 | - |
| dc.identifier.isi | WOS:000174030900013 | - |
| dc.identifier.issnl | 0163-1829 | - |