Locking of magnetization and Josephson oscillations at ferromagnetic resonance in a φ0 junction under external radiation
S. A. Abdelmoneim, Yu. M. Shukrinov, K. V. Kulikov, H. ElSamman, M. Nashaat
DOI 10.1103/PhysRevB.106.014505 · Physical Review B
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Abstract
We demonstrate the locking of magnetic precession in the φ0 Josephson junction by external electromagnetic radiation through the locking of the Josephson oscillations in the ferromagnetic resonance region. This leads to a step in the dependence of the magnetization on the bias current. The step's position is determined by the radiation frequency and the shape of the resonance curve. In junctions with a strong spin-orbit coupling, states with negative differential resistance appear on the IV characteristic, resulting in an additional locking step. We show that the corresponding oscillations have the same frequency as the oscillations at the first step, but they have a different amplitude and a different dependence on the radiation frequency. This makes it possible to control not only the frequency but also the amplitude of the magnetic precession in the locking region. It opens up unique perspectives for the control and manipulation of magnetic moment in hybrid superconducting systems.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Se3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| InAs/Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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