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We study magnetization reversal in a $\varphi_0$ Josephson junction with direct coupling between magnetic moment and Josephson current. Our simulations of magnetic moment dynamics show that by applying an electric current pulse, we can…

Superconductivity · Physics 2017-05-24 Yu. M. Shukrinov , I. R. Rahmonov , K. Sengupta , A. Buzdin

The magnetization reversal in ${\varphi_0}$-Josephson junction with direct coupling between magnetic moment and Josephson current has been studied. By adding pulse signal, the dynamics of magnetic moment components have been simulated and…

We study a magnetization reversal by an electric current pulse in a superconductor/insulating ferromagnet/superconductor Josephson junction placed on top of a 3D topological insulator. It is demonstrated that such a system is perspective…

Superconductivity · Physics 2020-10-21 I. V. Bobkova , A. M. Bobkov , I. R. Rahmonov , A. A. Mazanik , K. Sengupta , Yu. M. Shukrinov

We discuss the effects of thermal noise on the magnetic response of a lateral ferromagnetic Josephson junction with spin-orbit coupling and out-of-plane magnetization. The direction of the magnetic moment in the ferromagnetic layer can be…

Superconductivity · Physics 2020-10-29 C Guarcello , FS Bergeret

We study theoretically a dynamics of $\varphi_0$ junction with direct coupling between magnetic moment and Josephson current which shows features close to Kapitza pendulum. We have found that starting with oscillations along $z$-axis, the…

Superconductivity · Physics 2018-08-01 Yu. M. Shukrinov , A. Mazanik , I. R. Rahmonov , A. E. Botha , A. Buzdin

The possibility of magnetization resonant control in a Josephson superconductor-ferromagnet-superconductor $\varphi_{0}$ junction shunted by an $LC$ circuit is demonstrated. As a result of the resonance of Josephson oscillations with…

Superconductivity · Physics 2024-11-26 I. R. Rahmonov , Yu. M. Shukrinov , O. A. Kibardina , S. A. Abdelmoneim

We theoretically investigate the magnetization inside a normal metal containing the Rashba spin-orbit interaction (RSOI) induced by the proximity effect in an s-wave superconductor/normal metal/ferromagnetic metal/s-wave superconductor…

Superconductivity · Physics 2018-06-26 Shin-ichi Hikino

The Josephson $\varphi_0$ junctions with the current-phase relation $I = I_c \sin (\varphi-\varphi_0)$, where the phase shift $\varphi_0$ is proportional to the magnetic moment perpendicular to the gradient of the asymmetric spin-orbit…

Superconductivity · Physics 2019-07-03 Yu. M. Shukrinov , I. R. Rahmonov , K. Sengupta

We show that Josephson $\psi$ junctions with the half-metallic (HM) weak link coupled to the superconducting (S) electrodes through the ferromagnetic (F) layers host collective excitations of magnetic moment and the Josephson phase. This…

Superconductivity · Physics 2021-10-06 S. V. Mironov , A. I. Buzdin

We put forward a method for achieving fast and robust for magnetization reversal in a nanomagnet, by combining the inverse engineering and composite pulses. The magnetic fields, generated by microwave with time-dependent frequency, are…

Quantum Physics · Physics 2017-03-13 Ze-Guo Song , Han Wu , Si Wang , Yue Ban , Xi Chen

We investigate supercurrent-induced magnetization dynamics in a Josephson junction with two misaligned ferromagnetic layers, and demonstrate a variety of effects by solving numerically the Landau-Lifshitz-Gilbert equation. In particular, we…

Superconductivity · Physics 2015-05-19 Jacob Linder , Takehito Yokoyama

The dynamics of magnetization and current-voltage characteristics of the superconductor-ferromagnet-superconductor $\varphi_0$ Josephson junction in the presence of external electromagnetic radiation have been studied. Effects of radiation…

Superconductivity · Physics 2024-07-22 M. Nashaat , E. Kovalenko , Yu. M. Shukrinov

We consider a Josephson junction where the weak-link is formed by a non-centrosymmetric ferromagnet. In such a junction, the superconducting current acts as a direct driving force on the magnetic moment. We show that the a.c. Josephson…

Superconductivity · Physics 2009-01-08 François Konschelle , Alexandre Buzdin

Magnetic junction is considered which consists of two ferromagnetic metal layers, a thin nonmagnetic spacer in between, and nonmagnetic lead. Theory is developed of a magnetization reversal due to spin injection in the junction.…

Materials Science · Physics 2009-11-10 R. J. Elliott , E. M. Epshtein , Yu. V. Gulyaev , P. E. Zilberman

Magnetization reversal in magnetic particles is one of the fundamental issues in magnetic data storage. Technological improvements require the understanding of dynamical magnetization reversal processes at nanosecond time scales. New…

Materials Science · Physics 2015-06-24 C. Thirion , W. Wernsdorfer , D. Mailly

The results are presented of a numerical simulation of the switching magnetic junction by a spin-polarized current pulse under applied magnetic field with the current density and field below the threshold values. A possibility is shown of…

Materials Science · Physics 2010-07-23 S. G. Chigarev , E. M. Epshtein , Yu. V. Gulyaev , P. E. Zilberman

We show that the S/F/S Josephson $\varphi_0$-junction permits detection of macroscopic quantum tunneling and quantum oscillation of the magnetic moment by measuring the ac voltage across the junction. Exact expression for the tunnel…

Mesoscale and Nanoscale Physics · Physics 2016-05-25 Eugene M. Chudnovsky

The reversal of the magnetization under the influence of a field pulse has been previously predicted to be an incoherent process with several competing phenomena such as domain wall relaxation, spin wave-mediated instability regions, and…

Here we consider the magnetization dynamics in ferromagnetic nanoparticles or films driven by external magnetic field pulses directed transverse to the initial equilibrium state. The excitation pulse drives large-angle ultra-fast…

Dynamical Systems · Mathematics 2024-10-23 Alessandro Fortunati , Massimiliano d'Aquino , Claudio Serpico

The review is devoted to the fundamental aspects and characteristic features of the magnetoelectric effects, reported in the literature on Josephson junctions (JJs). The main focus of the review is on the manifestations of the direct and…

Superconductivity · Physics 2022-07-20 I. V. Bobkova , A. M. Bobkov , M. A. Silaev
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