2019
DOI: 10.3762/bjnano.10.144
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Superconducting switching due to a triplet component in the Pb/Cu/Ni/Cu/Co2Cr1−xFexAly spin-valve structure

Abstract: We report the superconducting properties of the Co2Cr1 −x Fe x Al y /Cu/Ni/Cu/Pb spin-valve structure the magnetic part of which comprises the Heusler alloy layer HA = Co2Cr1 −x Fe x Al y with a high degree of spin polarization (DSP) of the conduction band and a Ni layer of variable thickness. The separation between the superconducting transition curves measured for the parallel (α = 0°) and perpendicular (α = 90°) orientation of the magnetization of the HA and the Ni layers reaches up to 0.5 K (α is the an… Show more

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Cited by 30 publications
(11 citation statements)
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“…In general the Pb layer should be sufficiently thin to make the whole SC layer sensitive to the magnetic part of the structure. The optimal thicknesses of the Pb layer for both structure types were determined from the T c (d P b ) curves for the HA RT /Cu/Pb and Ni/Cu/Pb trilayers measured at constant d HA RT = 12 nm and d N i = 5 nm, respectively (for preliminary data see our work [42]).…”
Section: Dependence Of the Superconducting Transition Temperature On ...mentioning
confidence: 99%
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“…In general the Pb layer should be sufficiently thin to make the whole SC layer sensitive to the magnetic part of the structure. The optimal thicknesses of the Pb layer for both structure types were determined from the T c (d P b ) curves for the HA RT /Cu/Pb and Ni/Cu/Pb trilayers measured at constant d HA RT = 12 nm and d N i = 5 nm, respectively (for preliminary data see our work [42]).…”
Section: Dependence Of the Superconducting Transition Temperature On ...mentioning
confidence: 99%
“…(Color online) Record splitting of the SC transition curves for the P and PP configurations of the magnetization of the Ni layer and the applied magnetic field H0 = 3.5 kOe which rotates the magnetization of the HA hot layer for the sample PLAK4216 (Experimental R(T ) dependences are reproduced from Ref. [42]). Shaded rectangle marks the operational area of the SSV.…”
Section: B Structure Typementioning
confidence: 99%
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“…The generation of the long-range triplet component of the superconducting pairing at noncollinear orientations of magnetizations in ferromagnetic layered systems is extensively studied in the framework of magnetic Josephson junctions (MJJ) (see reviews [1][2][3] and references therein for early works, and very recent papers [4,5] and references therein), and superconductive spin valves (SSV) [6][7][8][9]. The key points of underlying physics are non-uniform magnetic configurations in the system which mix singlet and triplet superconducting pairing channels.…”
Section: Introductionmentioning
confidence: 99%