Anomalous re-entrant superconductivity in Sr0.4K0.6BiO3: Recovery of superconductivity with electric and magnetic field

D. C. Kim, J. S. Kim, A. N. Baranov, Y. W. Park, J. S. Pshirkov, E. V. Antipov

Research output: Contribution to journalArticlepeer-review

Abstract

Anomalous re-entrant superconducting-normal resistive transition was observed in Sr0.4K0.6BIO3 superconductor i.e., normal - supernormal behavior as temperature is increased. Contrary to previously reported re-entrant resistive behaviors in other compounds, the re-entrant resistivity appearing at zero magnetic field in Sr0.4K0.6BiO3 is suppressed to zero by applying an external magnetic field (H) or increasing the electrical transport current (I): an observation of a zero resistive superconducting state induced by H or I. Comparisons of the normal-state resistivity data in different samples indicate an important role that disorder in the junction barriers between superconducting grains might play on the observed re-entrant resistivity behavior. Possible physical origins of this anomalous phenomenon are discussed.

Original languageEnglish
Pages (from-to)3189-3192
Number of pages4
JournalInternational Journal of Modern Physics B
Volume16
Issue number20-22
DOIs
Publication statusPublished - 30 Aug 2002
Externally publishedYes

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