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相关论文: Magnetization dynamics due to field interplay in f…

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We investigated the possibilities of controlling the nonlinear frequency shift of the magnetization oscillations in a spin-transfer nanoscillator by varying the magnitude and direction of the bias magnetic field. We considered both…

介观与纳米尺度物理 · 物理学 2023-11-15 A. A Matveev , A. R. Safin , S. A. Nikitov

We study various holographic pure and mixed state entanglement measures in the confined/deconfined phases of a bottom-up AdS/QCD model in the presence of a background magnetic field. We analyse the entanglement entropy, entanglement wedge…

高能物理 - 理论 · 物理学 2023-05-10 Parul Jain , Siddhi Swarupa Jena , Subhash Mahapatra

The large saturation magnetization in conventional dense moment ferromagnets offers flexible means of manipulating the ordered state through demagnetizing shape anisotropy fields but these dipolar fields, in turn, limit the integrability of…

Spin-torque nano-oscillators (STNOs) are a type of nanoscale microwave auto-oscillators utilizing spin-torque to generate magnetodynamics with great promise for applications in microwaves, magnetic memory, and neuromorphic computing. Here,…

应用物理 · 物理学 2023-03-16 Sheng Jiang , Sunjae Chung , Quang Tuan Le , Ping Kwan Johnny Wong , Wen Zhang , Johan Åkerman

We propose here a high-frequency spin-Hall nano-oscillator based on a simple magnetic texture, such as a domain wall, located in an antiferromagnet with easy-axis anisotropy type. We show that the spin current, polarized along the…

介观与纳米尺度物理 · 物理学 2023-04-28 Roman V. Ovcharov , Elena G. Galkina , Boris A. Ivanov , Roman S. Khymyn

Magnetic anisotropy in atomically thin correlated heterostructures is essential for exploring quantum magnetic phases for next-generation spintronics. Whereas previous studies have mostly focused on van der Waals systems, here, we…

Spin-orbit torque (SOT) can drive sustained spin wave (SW) auto-oscillations in a class of emerging microwave devices known as spin Hall nano-oscillators (SHNOs), which have highly non-linear properties governing robust mutual…

The period of magnetization oscillations that occur near the surface of a nanotube or nanowire under the influence of surface magnetic anisotropy is determined by means of numerical simulation as a function of nanowire geometry and material…

介观与纳米尺度物理 · 物理学 2018-01-08 N. A. Usov , O. N. Serebryakova

It was experimentally observed that both magnetic anisotropy and spin-orbit interaction strength change when the magnetization of the nanomagnet is reversed. This indicates a variation in spin-orbit interaction strength depending on whether…

介观与纳米尺度物理 · 物理学 2024-07-10 Vadym Zayets

Spin-orbit-torque-driven auto-oscillations in spin Hall nano-oscillators (SHNOs) offer a transformative pathway toward energy-efficient, nanoscale microwave devices for next-generation neuromorphic computing and high-frequency technologies.…

We investigate the influence of field-like torque and the direction of the external magnetic field on a one-dimensional array of serially connected spin-torque nano oscillators, having free layers with perpendicular anisotropy, to achieve…

介观与纳米尺度物理 · 物理学 2023-12-29 R. Arun , R. Gopal , V. K. Chandrasekar , M. Lakshmanan

In this work, magnetization dynamics is studied in superconductor/ferromagnet/superconductor three-layered films in a wide frequency, field, and temperature ranges using the broad-band ferromagnetic resonance measurement technique. It is…

We present electron spin resonance experiments in the one-dimensional antiferromagnetic S=1 spin chains NENP and NINO in pulsed magnetic fields up to 50T. The measured field dependence of the quantum energy gap for B||b is analyzed using…

强关联电子 · 物理学 2009-10-31 M. Sieling , U. Löw , B. Wolf , S. Schmidt , S. Zvyagin , B. Lüthi

Spintronics-based nonvolatile components in neuromorphic circuits offer the possibility of realizing novel functionalities at low power. Current-controlled electrical switching of magnetization is actively researched in this context.…

应用物理 · 物理学 2023-01-10 A. S. Goossens , M. A. T. Leiviskä , T. Banerjee

Spin-torque and spin-Hall oscillators (SHOs) have emerged as promising candidates for building blocks in neuromorphic computing due to their ability to synchronize mutually, a process that can be mediated by propagating spin waves. We…

The spin mixing dynamics of spin-1 Bose-Einstein condensates with zero magnetization and under an external magnetic field is investigated. The time-dependent solutions are obtained via a diagonalization of the Hamiltonian, which has a…

其他凝聚态物理 · 物理学 2008-02-15 Zhifeng Chen , Chengguang Bao , Zhibing Li

We investigate the equilibrium magnetization in ferromagnetic nanoscrews (NSw) using micromagnetic simulations. These systems consist of elongated three-dimensional magnetic membranes with helicoidal geometry, combining curvature, torsion…

介观与纳米尺度物理 · 物理学 2026-03-25 Victoria Acosta-Pareja , Valeria M. A. Salinas , Omar J. Suarez , Attila Kákay , Jorge A. Otálora

We demonstrate a large angular dependence of magnetization dynamics in Ni80Fe20 nano-cross arrays of varying sizes. By subtle variation of the azimuthal angle of an in-plane bias magnetic field, the spin configuration and the ensuing…

介观与纳米尺度物理 · 物理学 2018-12-21 Kartik Adhikari , Saswati Barman , Ruma Mandal , Yoshichika Otani , Anjan Barman

We study the spin mixing dynamics of ultracold spin-1 atoms in a weak non-uniform magnetic field with field gradient $G$, which can flip the spin from +1 to -1 so that the magnetization $m=\rho_{+}-\rho_{-}$ is not any more a constant. The…

量子气体 · 物理学 2017-04-06 Jie Zhang , Baoguo Yang , Yunbo Zhang

Recent advances in the studies of pure spin currents - flows of angular momentum (spin) not accompanied by the electric currents - have opened new horizons for the emerging technologies based on the electron's spin degree of freedom, such…

介观与纳米尺度物理 · 物理学 2017-03-03 V. E. Demidov , S. Urazhdin , G. de Loubens , O. Klein , V. Cros , A. Anane , S. O. Demokritov