Energy-efficient spin injector into semiconductors driven by elastic waves

Azovtsev, Andrei V.; Nikitchenko, Andrei I.; Pertsev, N. A.

doi:10.1103/physrevmaterials.5.054601

Cited by 10 publications

(2 citation statements)

References 65 publications

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“…We couple such a Josephson junction to the model that describes the magnetodynamics in thin films or heterostructures to form the Landau-Lifshitz-Gilbert-Josephson model (LLGJ) [14][15][16]. It is shown that, for a particular set of parameters, the coupled equations reduce to the dynamics of a Duffing oscillator [14].…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear features of the superconductor–ferromagnet–superconductor φ₀ Josephson junction in the ferromagnetic resonance region

Janalizadeh¹,

Rahmonov²,

Abdelmoneim³

et al. 2022

Beilstein J. Nanotechnol.

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We demonstrate the manifestations of nonlinear features in magnetic dynamics and I–V characteristics of a φ0 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 I–V characteristics and its correlation with the fold-over effect.

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Section: Introductionmentioning

confidence: 99%

“…The magnetization precession in the ultra thin Co 20 F e 60 B 20 layer stimulated by microwave voltage under a large angle, needs modeling by Duffing oscillator too. This gets help from the so called foldover features, again due to nonlinearity [16,23,24].…”

mentioning

confidence: 99%

Nonlinear features of the superconductor–ferromagnet–superconductor φ₀ Josephson junction in the ferromagnetic resonance region

Janalizadeh¹,

Rahmonov²,

Abdelmoneim³

et al. 2022

Beilstein J. Nanotechnol.

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show abstract

Study of optical, magnetic, electronic, thermodynamic and mechanical properties of effect of substitution Co on Ti site on half metallicity of XA type ordering of Ti2FeGe compound

et al. 2023

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Excitation and detection of coherent sub-terahertz magnons in ferromagnetic and antiferromagnetic heterostructures

Zhuang

2022

npj Comput Mater

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Excitation of coherent high-frequency magnons (quanta of spin waves) is critical to the development of high-speed magnonic devices. Here we computationally demonstrate the excitation of coherent sub-terahertz (THz) magnons in ferromagnetic (FM) and antiferromagnetic (AFM) thin films by a photoinduced picosecond acoustic pulse. Analytical calculations are also performed to reveal the magnon excitation mechanism. Through spin pumping and spin-charge conversion, these magnons can inject sub-THz charge current into an adjacent heavy-metal film which in turn emits electromagnetic (EM) waves. Using a dynamical phase-field model that considers the coupled dynamics of acoustic waves, spin waves, and EM waves, we show that the emitted EM wave retains the spectral information of all the sub-THz magnon modes and has a sufficiently large amplitude for near-field detection. These predictions indicate that the excitation and detection of sub-THz magnons can be realized in rationally designed FM or AFM thin-film heterostructures via ultrafast optical-pump THz-emission-probe spectroscopy.

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Energy-efficient spin injector into semiconductors driven by elastic waves

Cited by 10 publications

References 65 publications

Nonlinear features of the superconductor–ferromagnet–superconductor φ₀ Josephson junction in the ferromagnetic resonance region

Nonlinear features of the superconductor–ferromagnet–superconductor φ₀ Josephson junction in the ferromagnetic resonance region

Study of optical, magnetic, electronic, thermodynamic and mechanical properties of effect of substitution Co on Ti site on half metallicity of XA type ordering of Ti2FeGe compound

Excitation and detection of coherent sub-terahertz magnons in ferromagnetic and antiferromagnetic heterostructures

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Energy-efficient spin injector into semiconductors driven by elastic waves

Cited by 10 publications

References 65 publications

Nonlinear features of the superconductor–ferromagnet–superconductor φ0 Josephson junction in the ferromagnetic resonance region

Nonlinear features of the superconductor–ferromagnet–superconductor φ0 Josephson junction in the ferromagnetic resonance region

Study of optical, magnetic, electronic, thermodynamic and mechanical properties of effect of substitution Co on Ti site on half metallicity of XA type ordering of Ti2FeGe compound

Excitation and detection of coherent sub-terahertz magnons in ferromagnetic and antiferromagnetic heterostructures

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Product

Resources

About

Nonlinear features of the superconductor–ferromagnet–superconductor φ₀ Josephson junction in the ferromagnetic resonance region

Nonlinear features of the superconductor–ferromagnet–superconductor φ₀ Josephson junction in the ferromagnetic resonance region