Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Interplay between spin-relaxation and Andreev reflection in ferromagnetic wires with superconducting contacts
AU - Fal'ko, V I
AU - Falko, Vladimir
AU - Volkov, A F
AU - Lambert, Colin
PY - 1999/12/1
Y1 - 1999/12/1
N2 - We analyze the change in the resistance of a junction between a diffusive ferromagnetic (F) wire and normal-metal electrode, due to the onset of superconductivity (S) in the latter and a double Andreev scattering process leading to a complete internal reflection of a large fraction of the spin-polarized electrons back into the ferromagnet. The superconducting transition results in an additional contact resistance arising from the necessity to match the spin-polarized current in F wire to the spinless current in S reservoir, which is comparable to the resistance of a piece of a F wire with the length equal to the spin-relaxation length. [S0163-1829(99)03342-1].
AB - We analyze the change in the resistance of a junction between a diffusive ferromagnetic (F) wire and normal-metal electrode, due to the onset of superconductivity (S) in the latter and a double Andreev scattering process leading to a complete internal reflection of a large fraction of the spin-polarized electrons back into the ferromagnet. The superconducting transition results in an additional contact resistance arising from the necessity to match the spin-polarized current in F wire to the spinless current in S reservoir, which is comparable to the resistance of a piece of a F wire with the length equal to the spin-relaxation length. [S0163-1829(99)03342-1].
U2 - 10.1103/PhysRevB.60.15394
DO - 10.1103/PhysRevB.60.15394
M3 - Journal article
VL - 60
SP - 15394
EP - 15397
JO - Physical review B
JF - Physical review B
SN - 1098-0121
IS - 22
ER -