Coexistence of tunneling magnetoresistance and Josephson effects in SFIFS junctions
Source abstract
Abstract
We demonstrate an integration of tunneling magnetoresistance and the Josephson effects within one tunneling junction. Several sets of Nb-Fe-Al-Al2O3-Fe-Nb wafers with varying Al and Fe layers thickness were prepared to systematically explore the competition of TMR and Josephson effects. A coexistence of the critical current IC(dFe) and the tunneling magnetoresistance ratio T M R(dFe) is observed for iron layer dFe thickness range 1.9 and 2.9 nm. Further optimization such as thinner Al2O3 layer leads to an enhancement of the critical current and thus to an extension of the coexistence regime up to dFe≃3.9 nm Fe.
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Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Quantum and electron transport phenomena · Magnetic properties of thin films
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Affiliations
University of Regensburg 1 Institute for Experimental and Applied Physics, , Universitätstr. 31, 93040 Regensburg, Germany
Christian-Albrechts-University in Kiel 2 Nanoelektronik, Technical Faculty, , Kaiserstr. 2, 24143 Kiel, Germany
Institute of Electrical Engineering SAS 3 , Dubravska cesta 9, 84104 Bratislava, Slovakia
University of Regensburg 4 Institute for Theoretical Physics, , Universitätstr. 31, 93040 Regensburg, Germany
Funding
Deutsche Forschungsgemeinschaft
References (16)
Show source-provided references
1. Phys. Rev. Lett. · 2001 · 86 · 242710.1103/physrevlett.86.2427 ↗
2. Phys. Rev. Lett. · 2002 · 89 · 13700710.1103/physrevlett.89.137007 ↗
3. Phys. Rev. Lett. · 2004 · 92 · 21700110.1103/physrevlett.92.217001 ↗
4. Science · 2010 · 329 · 5910.1126/science.1189246 ↗
5. Nature · 2006 · 439 · 82510.1038/nature04499 ↗
6. Phys. Rev. Lett. · 2010 · 104 · 20700110.1103/physrevlett.104.207001 ↗
7. Phys. Rev. Lett. · 2012 · 108 · 12700210.1103/physrevlett.108.127002 ↗
8. Appl. Phys. Lett. · 2004 · 84 · 115310.1063/1.1646217 ↗
9. Nature Comm. · 2014 · 5 · 388810.1038/ncomms4888 ↗
10. Appl. Phys. Lett. · 2014 · 104 · 02260210.1063/1.4867758 ↗
11. Nat. Phys. · 2016 · 12 · 56410.1038/nphys3681 ↗
12. IEEE Appl. Supercond. · 2015 · 25 · 180070510.1109/tasc.2014.2318317 ↗
13. Phys. Rev. Lett. · 1995 · 74 · 327310.1103/physrevlett.74.3273 ↗
14. J. Magn. Magn. Mater. · 1995 · 139 · L23110.1016/0304-8853(95)90001-2 ↗
15. Appl. Phys. Lett. · 2006 · 89 · 12251110.1063/1.2356104 ↗
16. Science · 2001 · 294 · 148810.1126/science.1065389 ↗