Transition Curve for the Destruction of Supraconductivity by an Electric Current

Abstract

IN former experiments with a tin ring1 we found that, when Supraconductivity is destroyed by an electric current, the field-strength Hkj corresponding to the critical current is equal to the critical magnetic field-strength Hk. In order to measure Hkj we have now employed the exceedingly high thermal conductivity of He II. Through a tin wire of radius 0.0056 cm. immersed in He II, we were able to send an enormous current (1.5 × 105 amp./sq. cm.) without noticeably heating the wire or the helium, which enabled us to determine the entire transition curve.

References

  1. 1

    L. Shubnikov, NATURE, 138, 545 (Sept. 26, 1936). L. W. Shubnikov and W. J. Chotkewitsch, Sow. Phys., in the press.

  2. 2

    Shubnikov, Chotkewitsch, Schepelew and Rjabinin, ” Arbeiten auf dem Gebiete tiefer Temperaturen”, Sow. Phys., Sondernummer, June 1936, p. 48.

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SHUBNIKOV, L., ALEXEJEVSKI, N. Transition Curve for the Destruction of Supraconductivity by an Electric Current. Nature 138, 804 (1936). https://doi.org/10.1038/138804a0

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