Enhanced triplet Andreev reflection off a domain wall in a lateral geometry

Abstract

We find that the triplet Andreev reflection amplitude at the interface between a half-metal and an s-wave superconductor in the presence of a domain wall is significantly enhanced if the half metal is a thin film, rather than an extended magnet. The enhancement is by a factor $l_{\mathrm{d}}/d$, where $l_{\mathrm{d}}$ is the width of the domain wall and $d$ the film thickness. We conclude that in a lateral geometry, domain walls can be an effective source of the triplet proximity effect.

4 pages, 3 figures

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Cited by in corpus (14)

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• Evidence for Half-Metallicity in n-type HgCr2Se4
• Andreev reflection at half-metal-superconductor interfaces with non-uniform magnetization
• Generation of pure superconducting spin current in magnetic heterostructures via non-locally induced magnetism due to Landau Fermi-liquid effects
• Proximity-induced gap in nanowires with a thin superconducting shell
• Impurity-assisted Andreev reflection at a spin-active half-metal-superconductor interface
• Spin current injection via equal-spin Cooper pairs in ferromagnet/superconductor heterostructures
• Proximity Effect in Superconducting Heterostructures with Strong Spin-Orbit Coupling and Spin Splitting
• Critical current measurements in superconductor - ferromagnet - superconductor junctions of $YB{a}_{2}C{u}_3{O}_y$-$SrRu{O}_3$-$YB{a}_{2}C{u}_3{O}_y$: No evidence for a dominant proximity induced triplet superconductivity in the ferromagnetic barrier
• Interface effects in d-wave superconductor-ferromagnet junctions
• Transport and spectroscopic properties of superconductor - ferromagnet - superconductor junctions of $L{a}_{1.9}S{r}_{0.1}Cu{O}_4$ - $L{a}_{0.67}C{a}_{0.33}Mn{O}_3$ - $L{a}_{1.9}S{r}_{0.1}Cu{O}_4$
• First-principles calculations of spin-triplet andreev reflection spectra at half-metallic ferromagnet/superconductor interface