Kinetic properties of high-temperature superconductors
E. V. Bezuglyı̆Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov 1V. M. DmitrievPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov 1Dmitriy A. DikinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov 1L. A. KotokV. N. SvetlovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov 1V. P. SeminozhenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov 1G. E. ChurilovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov 1
ABI
Abstract
An anomalous inductive response has been found experimentally in polycrystalline superconducting specimens of Y(La)–Ba(Sr)–Cu–O to a low-frequency (f= 0.1–10 kHz) alternating current. A relation between the observed magnitude of the inductance, L∼1 μH, and the critical current density of the specimen was established, which is explained by the formation in the specimen of a system of superconducting channels with current carrying capacity ≳108 A · cm−2 at T = 4.2 °K.
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