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Article overview
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Superconducting single-mode contact as a microwave-activated quantum interferometer | | L. Y. Gorelik
; N. I. Lundin
; V. S. Shumeiko
; R. I. Shekhter
; M. Jonson
; | | Date: |
2 Mar 1998 | | Subject: | Superconductivity; Mesoscopic Systems and Quantum Hall Effect | cond-mat.supr-con cond-mat.mes-hall | | Affiliation: | 1 and 3), N. I. Lundin , V. S. Shumeiko (2 and 3), R. I. Shekhter , and M. Jonson (Department of Applied Physics,Chalmers University of Technology and Goteborg University, Department of Microelectronics and Nanoscience, Chalmers University of Technol | | Abstract: | The dynamics of a superconducting quantum point contact biased at subgap voltages is shown to be strongly affected by a microwave electromagnetic field. Interference among a sequence of temporally localized, microwave-induced Landau-Zener transitions between current carrying Andreev levels results in energy absorption and in an increase of the subgap current by several orders of magnitude. The contact is an interferometer in the sense that the current is an oscillatory function of the inverse bias voltage. Possible applications to Andreev-level spectroscopy and microwave detection are discussed. | | Source: | arXiv, cond-mat/9803013 | | Services: | Forum | Review | PDF | Favorites | |
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