Zaitsev, A. V. ; Ovsyannikov, G. A. ; Constantinian, K. Y. ; Kislinskiĭ, Yu. V. ; Shadrin, A. V. ; Borisenko, I. V. ; Komissinskiy, P. V. (2010)
Superconducting current in hybrid structures with an antiferromagnetic interlayer.
In: Journal of Experimental and Theoretical Physics, 110 (2)
doi: 10.1134/S1063776110020172
Article, Bibliographie
Abstract
It is shown experimentally that the superconducting current density in Nb/Au/Ca1 − x Sr x CuO2/YBa2Cu3O7 − δ hybrid superconducting heterostructures with a Ca1 − x Sr x CuO2 anti-ferromagnetic (AF) cuprate interlayer is anomalously high for interlayer thicknesses d M = 10–50 nm and the characteristic damping length for superconducting correlations is on the order of 10 nm. The experimental results are explained on the basis of theoretical analysis of a junction of two superconductors (S′ and S) connected by a magnetic multilayer with the AF ordering of magnetization in the layers. It is shown that with such a magnetization ordering, anomalous proximity effect determined by the singlet component of the condensate wavefunction may take place. As a result, the critical currents in S′/I/AF/S and S′/I/N/S structures (I denotes an insulator, and N, the normal metal) may coincide in order of magnitude even when the thickness of the AF interlayer considerably exceeds the decay length of the condensate wavefunction in ferromagnetic layers.
| Item Type: | Article |
|---|---|
| Erschienen: | 2010 |
| Creators: | Zaitsev, A. V. ; Ovsyannikov, G. A. ; Constantinian, K. Y. ; Kislinskiĭ, Yu. V. ; Shadrin, A. V. ; Borisenko, I. V. ; Komissinskiy, P. V. |
| Type of entry: | Bibliographie |
| Title: | Superconducting current in hybrid structures with an antiferromagnetic interlayer |
| Language: | English |
| Date: | 2010 |
| Publisher: | Springer |
| Journal or Publication Title: | Journal of Experimental and Theoretical Physics |
| Volume of the journal: | 110 |
| Issue Number: | 2 |
| DOI: | 10.1134/S1063776110020172 |
| Abstract: | It is shown experimentally that the superconducting current density in Nb/Au/Ca1 − x Sr x CuO2/YBa2Cu3O7 − δ hybrid superconducting heterostructures with a Ca1 − x Sr x CuO2 anti-ferromagnetic (AF) cuprate interlayer is anomalously high for interlayer thicknesses d M = 10–50 nm and the characteristic damping length for superconducting correlations is on the order of 10 nm. The experimental results are explained on the basis of theoretical analysis of a junction of two superconductors (S′ and S) connected by a magnetic multilayer with the AF ordering of magnetization in the layers. It is shown that with such a magnetization ordering, anomalous proximity effect determined by the singlet component of the condensate wavefunction may take place. As a result, the critical currents in S′/I/AF/S and S′/I/N/S structures (I denotes an insulator, and N, the normal metal) may coincide in order of magnitude even when the thickness of the AF interlayer considerably exceeds the decay length of the condensate wavefunction in ferromagnetic layers. |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 30 Mar 2012 08:51 |
| Last Modified: | 05 Mar 2013 10:00 |
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