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Andreev experiments on superconductor/ferromagnet point contacts
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10.1063/1.4795198
/content/aip/journal/ltp/39/3/10.1063/1.4795198
http://aip.metastore.ingenta.com/content/aip/journal/ltp/39/3/10.1063/1.4795198

Figures

Image of FIG. 1.
FIG. 1.

Normalized differential conductance G/GN as a function of eV/Δ. The curves are calculated using the τ-model (see text) for different polarizations at T = 0.02 Tc . For clarity, the curves are shifted successively upwards by 0.2 units.

Image of FIG. 2.
FIG. 2.

Normalized differential conductance G/GN as a function of eV/Δ. The curves are calculated using the τ-model (see text) for the same polarization P = 0.4 at T = 0.22 Tc . For clarity, the curves are shifted successively upwards by 0.4 units.

Image of FIG. 3.
FIG. 3.

Point-contact spectra of S/N contacts together with fits according to Martin–Rodero et al., 26 (dashed curve) and Mazin et al. 25 (solid curve). (a) Pb/Cu contact at 1.4 K with R = 2.7 Ω. (b) Pb/Pt contact at 2.1 K with R = 7.5 Ω. For the fit parameters see text.

Image of FIG. 4.
FIG. 4.

Comparison of Andreev spectra for P = 0, 0.2, 0.4, 0.6, 0.8, and 1 calculated according to the τ-model (black curves) and the dispartment model (red curves). For clarity, the curves are shifted successively downward by 0.4 units.

Image of FIG. 5.
FIG. 5.

Point-contact spectra of Al/Fe contacts at 0.1 K together with fits according to the τ-model (a) and according to the dispartment model (b).

Tables

Generic image for table
Table I.

Fit parameters Δ0, τ, and τ in the τ-model and Δ0, Z, and P′ in the dispartment model for the conductance spectra of nanostructured Al/Fe point contacts. The interface barrier Z and the current spin polarization P have been calculated using the transmission coefficients τ and τ.

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/content/aip/journal/ltp/39/3/10.1063/1.4795198
2013-03-27
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Andreev experiments on superconductor/ferromagnet point contacts
http://aip.metastore.ingenta.com/content/aip/journal/ltp/39/3/10.1063/1.4795198
10.1063/1.4795198
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