Effect of spin-triplet correlations on Josephson transport in atomically thin superconductor/half-metal/superconductor structures
| Autor: | Alexandre I. Buzdin, Sergei V. Mironov, Zh. Devizorova |
|---|---|
| Přispěvatelé: | Moscow Institute of Physics and Technology, Laboratoire Ondes et Matière d'Aquitaine (LOMA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
[PHYS]Physics [physics]
Physics Superconductivity Josephson effect Condensed matter physics Spin polarization Magnetic moment 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Condensed Matter::Superconductivity 0103 physical sciences Proximity effect (superconductivity) Critical current Half-metal 010306 general physics 0210 nano-technology ComputingMilieux_MISCELLANEOUS Spin-½ |
| Zdroj: | Physical Review B Physical Review B, American Physical Society, 2021, 103 (22), ⟨10.1103/PhysRevB.103.224510⟩ |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | We study the effect of the triplet proximity effect on Josephson transport in superconductor/half-metal/superconductor structures of atomic thickness beyond the quasiclassical approximation. Using the combination of microscopic ${\mathrm{Gor}}^{\ensuremath{'}}\mathrm{kov}$ formalism and tight-binding model we show that the full spin polarization inside the half-metal give rise to nonmonotonic temperature dependence of the critical current in S/HM/S Josephson junction with two spin active S/HM interfaces. We also calculate the magnetic moment inside the ${\mathrm{S}}_{2}$ layer in ${\mathrm{S}}_{1}/\mathrm{HM}/{\mathrm{S}}_{2}$ structure with spin-active ${\mathrm{S}}_{1}/\mathrm{HM}$ interface, which is induced by the spin-triplet superconducting correlations. Finally, we analyze the second-harmonic generation in ${\mathrm{S}}_{1}/\mathrm{HM}/{\mathrm{S}}_{2}$ structure with one spin-active interface. |
| Databáze: | OpenAIRE |
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