Dynamic mixed state in micron-size bridges based on Bi2Sr2CaCu2Ox whiskers |
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Authors: | S. G. Zybtsev I. G. Gorlova V. Ya. Pokrovskii |
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Affiliation: | (1) Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, 103907, Russia |
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Abstract: | Measurements of the current-voltage characteristics of micron-size bridges made of Bi2Sr2CaCu2Ox single-crystal whiskers are carried out. It is found that, at temperatures below the superconducting transition temperature, the current-voltage characteristics exhibit quasi-periodic voltage jumps with segments of constant differential resistance whose value is proportional to the jump number. For the narrowest bridges (0.5–1 ¼m), up to ten voltage jumps are observed. The result of the experiment is explained by the formation of vortex lines under the current effect. |
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