| 摘 要： | The effect of an electric field E=120 MV/m in the electrode-insulator-superconductor system on I–V curves obtained at 77 K on two types of single-crystal samples cut from monolithic superconducting YBa2Cu3Ox/Y2BaCuO5 has been studied. The Y211 nonsuperconducting phase in the ingot was in the form of precipitates ≈1 μm in size. It has been
found that an electric field applied to samples with a comparatively low Y211 content (volume fraction 8%) does not affect
the critical current I
c
while reducing the resistance R at currents slightly above I
c
. In samples containing more than 35% Y211 phase, electric field results in an increase of I
c
and a decrease of R for I>I
c
. Data on the critical temperature T
c
and the temperature dependence of I
c
have also been obtained.
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Translated from Fizika Tverdogo Tela, Vol. 42, No. 7, 2000, pp. 1172–1175.
Original Russian Text Copyright ? 2000 by Smirnov, Orlova, Sengupta, Goretta.
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