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铁磁共振区域中超导体 - 铁磁体 - 超导体φ约瑟夫森结的非线性特性。

Nonlinear features of the superconductor-ferromagnet-superconductor φ Josephson junction in the ferromagnetic resonance region.

作者信息

Janalizadeh Aliasghar, Rahmonov Ilhom R, Abdelmoneim Sara A, Shukrinov Yury M, Kolahchi Mohammad R

机构信息

Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), P.O. Box 45137-66731, Zanjan, Iran.

BLTP, JINR, Dubna, Moscow Region, 141980, Russia.

出版信息

Beilstein J Nanotechnol. 2022 Oct 21;13:1155-1166. doi: 10.3762/bjnano.13.97. eCollection 2022.

DOI:10.3762/bjnano.13.97
PMID:36320429
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9592964/
Abstract

We demonstrate the manifestations of nonlinear features in magnetic dynamics and - characteristics of a φ Josephson junction in the ferromagnetic resonance region. We show that at small values of the system parameters damping, spin-orbit interaction, and Josephson-to-magnetic energy ratio, the magnetic dynamics is reduced to the dynamics of a scalar Duffing oscillator driven by the Josephson oscillations. The role of the increasing superconducting current in the resonance region is clarified. Shifting of the ferromagnetic resonant frequency and the reversal of its damping dependence due to nonlinearity are demonstrated by the full Landau-Lifshitz-Gilbert-Josephson system of equations and in its different approximations. Finally, we demonstrate the negative differential resistance in the - characteristics and its correlation with the fold-over effect.

摘要

我们展示了铁磁共振区域中磁动力学的非线性特征表现以及φ约瑟夫森结的特性。我们表明，在系统参数（阻尼、自旋 - 轨道相互作用和约瑟夫森能量与磁能之比）较小的情况下，磁动力学可简化为由约瑟夫森振荡驱动的标量达芬振荡器的动力学。阐明了共振区域中超导电流增加的作用。通过完整的朗道 - 里夫希茨 - 吉尔伯特 - 约瑟夫森方程组及其不同近似，证明了由于非线性导致的铁磁共振频率的偏移及其阻尼依赖性的反转。最后，我们展示了特性中的负微分电阻及其与折返效应的相关性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/47e06feebb85/Beilstein_J_Nanotechnol-13-1155-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/99486d4df746/Beilstein_J_Nanotechnol-13-1155-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/26e8ef28be42/Beilstein_J_Nanotechnol-13-1155-g009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/7e480c2f9975/Beilstein_J_Nanotechnol-13-1155-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/47e06feebb85/Beilstein_J_Nanotechnol-13-1155-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/9eb5a7a8dcd1/Beilstein_J_Nanotechnol-13-1155-g002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/51863eb11cba/Beilstein_J_Nanotechnol-13-1155-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/27ff2dd80c0f/Beilstein_J_Nanotechnol-13-1155-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/99486d4df746/Beilstein_J_Nanotechnol-13-1155-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/26e8ef28be42/Beilstein_J_Nanotechnol-13-1155-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/6470b1984db2/Beilstein_J_Nanotechnol-13-1155-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/7e480c2f9975/Beilstein_J_Nanotechnol-13-1155-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b101/9592964/47e06feebb85/Beilstein_J_Nanotechnol-13-1155-g012.jpg

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