Hot electron tunable supercurrent

Applied Physics Letters

Volumn 72, Issue 8, 1998, Pages 966-968

  Morpurgo, A F ^a   Klapwijk, T M ^a   Van Wees, B J ^a  

^a UNIVERSITY OF GRONINGEN   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRIC CURRENT CONTROL; ELECTRIC CURRENTS; ELECTRIC VARIABLES MEASUREMENT; ELECTRON TUNNELING; ELECTRONIC DENSITY OF STATES; HOT CARRIERS; NUMERICAL METHODS; SQUIDS; SUPERCONDUCTIVITY;

ELECTRONIC DISTRIBUTION FUNCTION; HOT ELECTRON TUNABLE SUPERCURRENT; SUPERCONDUCTING ELECTRODES; SUPERCURRENT FLOW;

JOSEPHSON JUNCTION DEVICES;

EID: 0032003447     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.120612     Document Type: Article

References (17)

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10. - contribute to the supercurrent with opposite sign (i.e., electrons in those states carry supercurrent in opposite directions). If one populates the + and - states with equal probability, the total supercurrent in the junction vanishes.
11. H. Pothier, S. Gueron, N. O. Birge, D. Esteve, and M. H. Devoret, Z. Phys. B 104, 178 (1997), and references therein.
12. A. F. Andreev, Zh. Eksp. Teor. Fiz. 46, 1823 (1964) [Sov. Phys. JETP 19, 1228 (1964)].
13. eff.
14. eff>T), leading to a decrease in the supercurrent, one can design suitable junctions and control lines in which the opposite effect is achieved. In such a system an increase in the control current results in a reduction of the average electron energy, thus effectively "cooling" [see, e.g., M. M. Leivo, J. P. Pekola, and D. V. Averin, Appl. Phys. Lett. 68, 1996 (1996)] the electrons and enhancing the supercurrent.
15. A. F. Morpurgo and T. M. Klapwijk (patent pending).
16. D. Prober, Appl. Phys. Lett. 62, 2119 (1993).
17. c product is consistent with what we expect for diffusive SNS superconducting junctions with transparent interfaces [F. K. Wilhelm, A. D. Zaikin, and G. Scön, Czech. J. Phys. 46, 2394 (1996)].