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Título: | Lissajous rocking ratchet: realization in a semiconductor quantum dot |
Autor: | Platonov, Sergey; Kästner, Bernd; Schumacher, Hans W.; Kohler, Sigmund CSIC ORCID; Ludwig, Stefan | Fecha de publicación: | 4-sep-2015 | Editor: | American Physical Society | Citación: | Physical Review Letters 115(10): 106801 (2015) | Resumen: | Breaking time-reversal symmetry (TRS) in the absence of a net bias can give rise to directed steady-state nonequilibrium transport phenomena such as ratchet effects. Here we present, theoretically and experimentally, the concept of a Lissajous rocking ratchet based on breaking TRS. Our system is a semiconductor quantum dot with periodically modulated dot-lead tunnel barriers. Broken TRS gives rise to single electron tunneling current. Its direction is fully controlled by exploring frequency and phase relations between the two barrier modulations. The concept of Lissajous ratchets can be realized in a large variety of different systems, including nanoelectrical, nanoelectromechanical, or superconducting circuits. It promises applications based on a detailed on-chip comparison of radio-frequency signals. | Versión del editor: | https://doi.org/10.1103/PhysRevLett.115.106801 | URI: | http://hdl.handle.net/10261/185088 | DOI: | 10.1103/PhysRevLett.115.106801 | Identificadores: | doi: 10.1103/PhysRevLett.115.106801 e-issn: 1079-7114 issn: 0031-9007 |
Aparece en las colecciones: | (ICMM) Artículos |
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accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
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