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UNUSUAL CHARACTERISTICS OF THE POINT-TUNNEL JUNCTION BETWEEN ALUMINIUM AND THE SUPERCONDUCTING AMORPHOUS ALLOY NIZR(2).

[In Russian. / En russe.]

Author(s) : GANTMAHER V. F., GOLUBOV A. A., OSEROV M. V.

Type of article: Article

Summary

THE CURRENT-VOLTAGE CHARACTERISTICS OF THE POINT-TUNNEL JUNCTION BETWEEN ALUMINIUM AND AN AMORPHOUS ALLOY RESEMBLING NIZR(2) IN COMPOSITION DIFFER FROM THOSE OF THE USUAL TUNNEL JUNCTIONS BETWEEN A SUPERCONDUCTING AND A NORMAL METAL. THE SHAPES OF THE CURVES CANNOT BE EXPLAINED BY TAKING INTO ACCOUNT ONLY SINGLE-PARTICLE TUNNELLING UNDER CONDITIONS OF THE PROXIMITY EFFECT. A MODEL IS DISCUSSED QUALITATIVELY IN WHICH THE INCREASE IN THE CURRENT FOR A VOLTAGE EQUAL TO THE GAP WIDTH ISDUE TO TWO-PARTICLE ELECTRON TUNNELLING THROUGH THE INTERMEDIATE STATE ; THE LATTER BEING A COOPER PAIR A H FERMI LEVEL. FOR VOLTAGES EXCEEDING THE GAP WIDTH THE CURRENT PASSING THROUGH THE JUNCTION DESTROYS THE SUPERCONDUCTIVITY IN THE VICINITY OF THE JUNCTION.

Details

  • Original title: [In Russian. / En russe.]
  • Record ID : 1990-2263
  • Languages: Russian
  • Source: Z. eksp. teor. Fiz. - vol. 96 - n. 4
  • Publication date: 1989/10
  • Document available for consultation in the library of the IIR headquarters only.

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