2001/07/04 by Jian Wang, Yadong Wei, Baigeng Wang +1 · 2 citations
Physics and Astronomy · #Mechanical and Optical Resonators #Quantum and electron transport phenomena #Topological Materials and Phenomena #cond-mat
paper · pdf · doi:10.1063/1.1421236
published as Appl. Phys. Lett. Vol.79, 3977 (2001).
arxiv created 2001/07/04 · openalex publication_date 2001/12/10 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report properties of parametric electron pumping in the presence of a superconducting lead. Due to a constructive interference between the direct reflection and the multiple Andreev reflection, the pumped current is greatly enhanced. For both quantum point contacts and double barrier structures at resonance, we obtain exact solutions in the weak pumping regime showing that IpNS=4IpN, which should be compared with the result of conductance GNS=2GN. Numerical results are also provided for the strong pumping regime showing interesting Andreev assisted pumping behavior.