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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…

超导电性 · 物理学 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…

超导电性 · 物理学 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…

超导电性 · 物理学 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…

超导电性 · 物理学 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…

超导电性 · 物理学 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…

超导电性 · 物理学 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…

超导电性 · 物理学 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…

超导电性 · 物理学 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…

量子物理 · 物理学 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…

超导电性 · 物理学 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…

超导电性 · 物理学 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…

超导电性 · 物理学 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.…

材料科学 · 物理学 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…

材料科学 · 物理学 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…

材料科学 · 物理学 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…

介观与纳米尺度物理 · 物理学 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…

动力系统 · 数学 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…

超导电性 · 物理学 2022-07-20 I. V. Bobkova , A. M. Bobkov , M. A. Silaev
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