Originality of resonance and locking phenomena in an SFS <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>φ</mml:mi> <mml:mn>0</mml:mn> </mml:msub> </mml:math> Josephson junction
Оригинальность явлений резонанса и синхронизации в SFS φ0 джозефсоновском переходе
2026-03-25
SCID: 54.1/xkhzj4nm
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Buzdin resonanceKittel resonanceSFS φ0 Josephson junctionferromagnetic resonance couplingspin-orbit interaction induced coupling
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Abstract (AI)
We demonstrate the realization and interplay of two ferromagnetic resonances in one SFS $φ_0$ Josephson junction. First resonance that is realized under microwave radiation is the famous Kittel resonance. The other is Buzdin one appearing as a result of interaction of superconducting current and ferromagnetic interlayer magnetization. Transformations of one type of resonance to another under variation of external electromagnetic radiation and the $φ_0$ junction parameters open an interesting way to manipulation both of them. The combined ferromagnetic resonance that exhibits the features of both resonances is demonstrated too. The coupling of the Josephson phase with the magnetization of the ferromagnetic layer, caused by the spin-orbit interaction, leads to double synchronization, namely, synchronization of both magnetic precession and Josephson oscillations by external radiation. The obtained results demonstrate reach physics and unique opportunities for various applications.
Key Findings
1
A combined ferromagnetic resonance exhibiting features of both Kittel and Buzdin resonances is demonstrated.
2
Spin-orbit–induced coupling between the Josephson phase and ferromagnetic-layer magnetization produces double synchronization: external radiation synchronizes both magnetic precession and Josephson oscillations.
3
The two resonances can transform into one another by varying external electromagnetic radiation and φ0 junction parameters, enabling manipulation of both resonances.
4
These resonance and locking phenomena reveal rich physics and suggest unique opportunities for applications based on controllable coupling in φ0 junctions.
5
Two distinct ferromagnetic resonances are realized in a single SFS φ0 Josephson junction: the conventional Kittel resonance and a Buzdin resonance arising from superconducting current–magnetization interaction.
Research Object
SFS φ0 Josephson junction with a ferromagnetic interlayer (S–F–S φ0 junction)
Research Subject
Resonance and locking phenomena: two ferromagnetic resonances (Kittel and Buzdin), their transformation, combined resonance features, and double synchronization between magnetic precession and Josephson oscillations under microwave radiation and φ0-junction parameters
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2026-03-25
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