Asymmetric spin-mixing conductances at two ferromagnet interfaces generate equal-spin triplet correlations in a central node, detectable as a net charge current between the magnets.
Proximity-induced gap in nanowires with a thin superconducting shell
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abstract
Coupling a normal metal wire to a superconductor induces an excitation gap in the normal metal. In the absence of disorder, the induced excitation gap is strongly suppressed by finite-size effects if the thickness of the superconductor is much smaller than the thickness of the normal metal and the superconducting coherence length. We show that the presence of disorder, either in the bulk or at the exposed surface of the superconductor, significantly enhances the magnitude of the induced gap, such that it approaches the superconducting gap in the limit of strong disorder. We also discuss the shift of energy bands inside the normal-metal wire as a result of the coupling to the superconducting shell.
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cond-mat.supr-con 1years
2019 1verdicts
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Phase-controlled spin and charge currents in superconductor-ferromagnet hybrids
Asymmetric spin-mixing conductances at two ferromagnet interfaces generate equal-spin triplet correlations in a central node, detectable as a net charge current between the magnets.