Spin pumping in superconductor-antiferromagnetic insulator bilayers
| Autor: | Eirik Holm Fyhn, Jacob Linder |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Superconductivity
Spin pumping Materials science Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Condensed Matter - Superconductivity FOS: Physical sciences Resonance 02 engineering and technology 021001 nanoscience & nanotechnology Magnetostatics 01 natural sciences Umklapp scattering Superconductivity (cond-mat.supr-con) Scattering channel Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Precession Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology |
| Zdroj: | Physical review B (PRB) |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.103.134508 |
| Popis: | We study theoretically spin pumping in bilayers consisting of superconductors and antiferromagnetic insulators. We consider both compensated and uncompensated interfaces and include both the regular scattering channel and the Umklapp scattering channel. We find that at temperatures close to the critical temperatures and precession frequencies much lower than the gap, the spin-current is enhanced in superconductors as compared to normal metals. Otherwise, the spin-current is suppressed. The relevant precession frequencies where the spin-current in SC/AFI is enhanced compared to NM/AFI is much lower than the typical resonance frequencies of antiferromagnets, which makes the detection of this effect experimentally challenging. A possible solution lies in the shifting of the resonance frequency by a static magnetic field. 10 pages, 5 figures |
| Databáze: | OpenAIRE |
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