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Spin-Triplet Superc...
Spin-Triplet Superconducting Current in Metal-Oxide Heterostructures With Composite Ferromagnetic Interlayer
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- Constantinian, K. Y. (författare)
- National Research University of Electronic Technology (MIET)
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- Ovsyannikov, Gennady, 1948 (författare)
- National Research University of Electronic Technology (MIET)
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- Sheyerman, A. E. (författare)
- National Research University of Electronic Technology (MIET)
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visa fler...
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- Kislinskiǐ, Yu V. (författare)
- National Research University of Electronic Technology (MIET)
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- Shadrin, A. V. (författare)
- National Research University of Electronic Technology (MIET)
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- Kalaboukhov, Alexei, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Mustafa, L. (författare)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Khaydukov, Y. N. (författare)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Winkler, Dag, 1957 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2016
- 2016
- Engelska.
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Ingår i: IEEE Transactions on Applied Superconductivity. - : Institute of Electrical and Electronics Engineers (IEEE). - 1558-2515 .- 1051-8223. ; 26:3
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Superconducting heterostructures fabricated from oxide superconductor YBa2Cu2O7-delta and a composite ferromagnet La0.7Sr0.3MnO3/SrRuO3 interlayer and Au/Nb counter electrode were studied experimentally. Superconducting current was observed at magnetic field H raised up to 2000 Oe, which is greater than saturation magnetic field of manganite La0.7Sr0.3MnO3 (of order 100 Oe) and greater by a few orders than the value of magnetic field corresponding to penetration of one magnetic flux quantum. Microwave measurements of integer and half-integer Shapiro steps in conditions when relatively low external magnetic fieldH < 30 Oe was applied showed that the second harmonic in the current-phase relation of superconducting current becomes as big as the first harmonic. Fourier analysis of I-C(H) dependence allows extracting the components of fractional periods in I-C(H) function that also confirms a deviation from the sinusoidal current-phase relation. The obtained experimental data are explained by theoretical models that predict a huge enhancement of the second harmonic of the spin-triplet component in the superconducting current. The current-phase relation could be controlled by an external magnetic field, changing the directions of magnetization in the composite bilayer ferromagnet, which is inserted between two spin-singlet superconductors.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- current-phase relations
- spin-triplet pairing
- superconducting heterostructure
- long-range proximity effect
- Composite ferromagnet
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Constantinian, K ...
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Ovsyannikov, Gen ...
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Sheyerman, A. E.
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Kislinskiǐ, Yu V ...
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Shadrin, A. V.
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Kalaboukhov, Ale ...
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visa fler...
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Mustafa, L.
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Khaydukov, Y. N.
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Winkler, Dag, 19 ...
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visa färre...
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TEKNIK OCH TEKNO ...
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Chalmers tekniska högskola