Physical Review B, volume 100, issue 13, publication number 134511
Superconducting spin-valve effect in heterostructures with ferromagnetic Heusler alloy layers
A. A. Kamashev
1
,
N.N Garif’yanov
1
,
Aidar Validov
1
,
Joachim Schumann
2
,
V. E. Kataev
2
,
B. Büchner
2, 3
,
Ya. V. Fominov
4, 5, 6
,
1
3
Institute for Solid State and Materials Physics, Technical University Dresden, D-01069 Dresden, Germany
|
Publication type: Journal Article
Publication date: 2019-10-23
Journal:
Physical Review B
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 3.7
ISSN: 24699950, 24699969, 10980121, 1550235X
Abstract
We report a comparative analysis and theoretical description of the superconducting properties of two spin-valve-valve structures containing the Heusler alloy Co$_2$Cr$_{1-x}$Fe$_x$Al$_{y}$ as one of two ferromagnetic (F1 or F2) layers of the F1/F2/S structure, where S stands for the superconducting Pb layer. In our experiments we used the Heusler alloy layer in two roles: as a weak ferromagnet on the place of the F2 layer and as a half-metal on the place of the F1 layer. In the first case, we obtained a large ordinary superconducting spin-valve effect $\Delta T_c$ assisted by the triplet superconducting spin-valve effect $\Delta T_c^{trip}$. In the second case, we observed a giant magnitude of $\Delta T_c^{trip}$ reaching 0.5 K. An underlying theory based on the solution of the Usadel equations using Kupriyanov-Lukichev boundary conditions with arbitrary material parameters for all layers and arbitrary boundary parameters for all interfaces is presented in Appendix. We find a good agreement between our experimental data and theoretical results.
Top-30
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1 publication, 3.7%
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Citations by publishers
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16
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15 publications, 55.56%
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3 publications, 11.11%
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2 publications, 7.41%
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1 publication, 3.7%
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1 publication, 3.7%
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Treatise
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1 publication, 3.7%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Kamashev A. A. et al. Superconducting spin-valve effect in heterostructures with ferromagnetic Heusler alloy layers // Physical Review B. 2019. Vol. 100. No. 13. 134511
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Kamashev A. A., Garif’yanov N., Validov A., Schumann J., Kataev V. E., Büchner B., Fominov Y. V., Garifullin I. Superconducting spin-valve effect in heterostructures with ferromagnetic Heusler alloy layers // Physical Review B. 2019. Vol. 100. No. 13. 134511
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TY - JOUR
DO - 10.1103/physrevb.100.134511
UR - https://doi.org/10.1103/physrevb.100.134511
TI - Superconducting spin-valve effect in heterostructures with ferromagnetic Heusler alloy layers
T2 - Physical Review B
AU - Kamashev, A. A.
AU - Garif’yanov, N.N
AU - Validov, Aidar
AU - Schumann, Joachim
AU - Kataev, V. E.
AU - Büchner, B.
AU - Fominov, Ya. V.
AU - Garifullin, I.A.
PY - 2019
DA - 2019/10/23
PB - American Physical Society (APS)
IS - 13
VL - 100
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
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@article{2019_Kamashev,
author = {A. A. Kamashev and N.N Garif’yanov and Aidar Validov and Joachim Schumann and V. E. Kataev and B. Büchner and Ya. V. Fominov and I.A. Garifullin},
title = {Superconducting spin-valve effect in heterostructures with ferromagnetic Heusler alloy layers},
journal = {Physical Review B},
year = {2019},
volume = {100},
publisher = {American Physical Society (APS)},
month = {oct},
url = {https://doi.org/10.1103/physrevb.100.134511},
number = {13},
doi = {10.1103/physrevb.100.134511}
}