TY - JOUR
T1 - Possibility of Cooper-pair formation controlled by multi-Terminal spin injection
AU - Ohnishi, K.
AU - Sakamoto, M.
AU - Ishitaki, M.
AU - Kimura, T.
N1 - Funding Information:
This work was partially supported by Grant-in-Aid for Scientific Research on Innovative Area, ”Nano Spin Conversion Science” (26103002), that for Scientific Research (S) (25220605), and that for Young Scientists (B) (17K14109).
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2018/4/19
Y1 - 2018/4/19
N2 - A multi-Terminal lateral spin valve consisting of three ferromagnetic nanopillars on a Cu/Nb bilayer has been fabricated. We investigated the influence of the spin injection on the superconducting properties at the Cu/Nb interface. The non-local spin valve signal exhibits a clear spin insulation signature due to the superconducting gap of the Nb. The magnitude of the spin signal is found to show the probe configuration dependence. From the careful analysis of the bias current dependence, we found the suppression of the superconductivity due to the exchange interaction between the Cooper pair and accumulated spin plays an important role in the multi-Terminal spin injections. We also discuss about the possibility of the Cooper-pair formation due to the spin injection from the two injectors with the anti-parallel alignment.
AB - A multi-Terminal lateral spin valve consisting of three ferromagnetic nanopillars on a Cu/Nb bilayer has been fabricated. We investigated the influence of the spin injection on the superconducting properties at the Cu/Nb interface. The non-local spin valve signal exhibits a clear spin insulation signature due to the superconducting gap of the Nb. The magnitude of the spin signal is found to show the probe configuration dependence. From the careful analysis of the bias current dependence, we found the suppression of the superconductivity due to the exchange interaction between the Cooper pair and accumulated spin plays an important role in the multi-Terminal spin injections. We also discuss about the possibility of the Cooper-pair formation due to the spin injection from the two injectors with the anti-parallel alignment.
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U2 - 10.1088/1742-6596/969/1/012028
DO - 10.1088/1742-6596/969/1/012028
M3 - Conference article
AN - SCOPUS:85046089886
VL - 969
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012028
T2 - 28th International Conference on Low Temperature Physics, LT 2018
Y2 - 9 August 2017 through 16 August 2017
ER -