The Stratified Superconductivity in Ba0.6K0.4BiO3 Single Crystal : Direct Measurement of Energy Gap between Homo-, and Inhomogeneous States
Joint Authors
Velikanov, D. A.
Tskhovrebov, A. M.
Klinkova, L. A.
Balaev, D. A.
Popkov, S. I.
Zherikhina, L. N.
Shaikhutdinov, K. A.
Source
International Journal of Superconductivity
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-03-02
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The existence of space inhomogeneous superconductor insulator state (SISIS) found out earlier in polycrystalline samples of high- TC system Ba0.6K0.4BiO3 (TC≈30 K) is confirmed on Ba0.6K0.4BiO3 single crystal.
At T* (T* SISIS is characterized by the appearance of two gaps on the Fermi surface, semi- and superconducting, which are modulated in space in antiphase, the electric transport between superconducting regions being carried out due to Josephson tunneling. Thus the whole sample becomes a multiple Josephson system. Nonlinear I-V curves are observed on Ba0.6K0.4BiO3 single crystal at temperatures below T*. Dependence of I-V curves on temperature and magnetic field, typical to a Josephson system, was found out. Besides, a step-like peculiarity at the values of voltage of the order of one and two superconducting gaps shows up. These peculiarities are suppressed by magnetic field much earlier than critical current. The new data firstly correlate with the model of SISIS and secondly permit for the first time to determining directly the energy gap between homogeneous and stratified superconductor states.
American Psychological Association (APA)
Zherikhina, L. N.& Tskhovrebov, A. M.& Klinkova, L. A.& Balaev, D. A.& Popkov, S. I.& Shaikhutdinov, K. A.…[et al.]. 2014. The Stratified Superconductivity in Ba0.6K0.4BiO3 Single Crystal : Direct Measurement of Energy Gap between Homo-, and Inhomogeneous States. International Journal of Superconductivity،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-463055
Modern Language Association (MLA)
Zherikhina, L. N.…[et al.]. The Stratified Superconductivity in Ba0.6K0.4BiO3 Single Crystal : Direct Measurement of Energy Gap between Homo-, and Inhomogeneous States. International Journal of Superconductivity No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-463055
American Medical Association (AMA)
Zherikhina, L. N.& Tskhovrebov, A. M.& Klinkova, L. A.& Balaev, D. A.& Popkov, S. I.& Shaikhutdinov, K. A.…[et al.]. The Stratified Superconductivity in Ba0.6K0.4BiO3 Single Crystal : Direct Measurement of Energy Gap between Homo-, and Inhomogeneous States. International Journal of Superconductivity. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-463055
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-463055