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Oscillation of Critical Current by Gate Voltage in Cooper Pair Transistor  

Song, W. (Korea Research Institute of Standards and Science)
Chong, Y. (Korea Research Institute of Standards and Science)
Kim, N. (Korea Research Institute of Standards and Science)
Publication Information
Progress in Superconductivity / v.11, no.2, 2010 , pp. 158-161 More about this Journal
Abstract
We measured the critical current of a Cooper pair transistor consisting of two Josephson junctions and a gate electrode. The Cooper pair transistors were fabricated by using electron-beam lithography and double-angle evaporation technique. The Gate voltage dependence of critical current was measured by observing voltage jumps at various gate voltages while sweeping bias current. The observed oscillation was 2e-periodic, which shows the Cooper pair transistor had low level of quasiparticle poisoning.
Keywords
Cooper pair transistor; critical current; Josephson junction; quasiparticle; tunneling;
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1 P. Joyez, P. Lafarge, A. Filipe, D. Esteve, and M. H. Devoret, Phys. Rev. Lett. 72, 2458 (1994).   DOI   ScienceOn
2 V. Ambegaokar and A. Baratoff, Phys. Rev. Lett. 10, 486 (1963).   DOI
3 P. W. Anderson, Lectures on the Many Body Problem vol. 2, edited by E. Caianello (Academic Press, New York, 1964).
4 G.-L. Ingold and Y. V. Nazarov, in Single Charge Tunneling: Coulomb Blockade Phenomena in Nanostructures, edited by H. Grabert and M. Devoret (Plenum Press, New York, 1992).
5 W. A. Maassen van den Brink, L. J. Geerligs, and G. Schon, Phys. Rev. Lett. 67, 3030 (1991).   DOI   ScienceOn
6 J. Aumentado, M. W. Keller, J. M. Martinis, and M. H. Devoret, Phys. Rev. Lett. 92, 066802 (2004).   DOI   ScienceOn
7 D. Vion, A. Aassime, A. Cottet, P. Joyez, H. Pothier, C. Urbina, D. Esteve, and M. H. Devoret, Science 296, 886 (2002).   DOI   ScienceOn
8 Y. Nakamura, Y. A. Pashkin, and J. S. Tsai, Nature 398, 786 (1999).   DOI   ScienceOn