A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Magnetization Dynamics in Proximity-Coupled Superconductor-Ferromagnet-Superconductor Multilayers (2020)

Golovchanskiy, I.A., Abramov, N.N., Stolyarov, V.S., Chichkov, V.I., Silaev, M., Shchetinin, I.V., Golubov, A.A., Ryazanov, V.V., Ustinov, A.V., & Kupriyanov, M.Yu. (2020). Magnetization Dynamics in Proximity-Coupled Superconductor-Ferromagnet-Superconductor Multilayers. Physical Review Applied, 14(2), Article 024086. https://doi.org/10.1103/PhysRevApplied.14.024086

JYU-tekijät tai -toimittajat

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Golovchanskiy, I.A.; Abramov, N.N.; Stolyarov, V.S.; Chichkov, V.I.; Silaev, M.; Shchetinin, I.V.; Golubov, A.A.; Ryazanov, V.V.; Ustinov, A.V.; Kupriyanov, M.Yu.

Lehti tai sarja: Physical Review Applied

ISSN: 2331-7019

eISSN: 2331-7019

Julkaisuvuosi: 2020

Ilmestymispäivä: 27.08.2020

Volyymi: 14

Lehden numero: 2

Artikkelinumero: 024086

Kustantaja: American Physical Society (APS)

Julkaisumaa: Yhdysvallat (USA)

Julkaisun kieli: englanti

DOI: https://doi.org/10.1103/PhysRevApplied.14.024086

Julkaisun avoin saatavuus: Ei avoin

Julkaisukanavan avoin saatavuus: 

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/71591

Rinnakkaistallenteen verkko-osoite (pre-print): https://arxiv.org/abs/2006.00348

Tiivistelmä

In this work, magnetization dynamics is studied in superconductor-ferromagnet-superconductor three-layered films in a wide frequency, field, and temperature ranges using the broad-band ferromagnetic resonance measurement technique. It is shown that in the presence of both superconducting layers and of superconducting proximity at both superconductor-ferromagnet interfaces a massive shift of the ferromagnetic resonance to higher frequencies emerges. The phenomenon is robust and essentially long-range: it has been observed for a set of samples with the thickness of ferromagnetic layer in the range from tens up to hundreds of nanometers. The resonance frequency shift is characterized by proximity-induced magnetic anisotropies: by the positive in-plane uniaxial anisotropy and by the drop of magnetization. The shift and the corresponding uniaxial anisotropy grow with the thickness of the ferromagnetic layer. For instance, the anisotropy reaches 0.27 T in experiment for a sample with a 350-nm-thick ferromagnetic layer, and about 0.4 T in predictions, which makes it a ferromagnetic film structure with the highest anisotropy and the highest natural resonance frequency ever reported. Various scenarios for the superconductivity-induced magnetic anisotropy are discussed. As a result, the origin of the phenomenon remains unclear. Application of the proximity-induced anisotropies in superconducting magnonics is proposed as a way for manipulations with a spin-wave spectrum.

YSO-asiasanat: ohutkalvot; suprajohteet; suprajohtavuus; magneettiset ominaisuudet

Vapaat asiasanat: magnetization dynamics; magnons; proximity effect; spin waves; ferromagnets; multilayer thin films; type-II superconductors

Liittyvät organisaatiot

OKM-raportointi: Kyllä

Raportointivuosi: 2020

JUFO-taso: 2