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相关论文: Nonlinear NMR dynamics in hyperpolarized liquid 3H…

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The orbital anisotropy induced in the superfluid 3He by nematic aerogel is, generally speaking, spatially non-uniform. This anisotropy in its turn induces spatial fluctuations of the order parameter. It is shown here that for the polar…

无序系统与神经网络 · 物理学 2019-04-22 I. A. Fomin

We investigate the evolutionary behavior of stellar structures with metallicity Z=0.04 in order to disclose theoretical expectations for both evolutionary and pulsational behaviors of Super-Metal-Rich (SMR) objects, which are found in the…

天体物理学 · 物理学 2009-09-25 Bono Giuseppe , Caputo Filippina , Cassisi Santi , Castellani Vittorio , Marconi Marcella

We present results from two-dimensional numerical simulations of a supersonic turbulent flow in the plane of the galactic disk, incorporating shear, thresholded and discrete star formation (SF), self-gravity, rotation and magnetic fields. A…

天体物理学 · 物理学 2009-10-28 T. Passot , E. Vazquez-Semadeni , A. Pouquet

We study the evolution of a Bose-Einstein Condensate (BEC) in a two-state superposition due to inter-state interactions. Using a population imbalanced dynamic decoupling scheme, we measure inter-state interactions while canceling…

原子物理 · 物理学 2021-05-26 Hagai Edri , Boaz Raz , Gavriel Fleurov , Roee Ozeri , Nir Davidson

We present a new study of nonlinear NMR and Bose-Einstein Condensation (BEC) of nuclear spin waves in antiferromagnetic MnCO3 with coupled electron and nuclear spins. In particular, we show that the observed behaviour of NMR signals…

其他凝聚态物理 · 物理学 2018-01-31 L. V. Abdurakhimov , M. A. Borich , Yu. M. Bunkov , R. R. Gazizulin , D. Konstantinov , M. I. Kurkin , A. P. Tankeyev

The nuclear magnetic resonance (NMR) spectrum of spin-3/2 nuclei in a static magnetic field aligned with one of the electric field gradient (EFG) principal axes is developed analytically, based on fictitious spin-1/2 formalism. Compact…

超导电性 · 物理学 2024-12-17 Jaafar N. Ansari , Karen L. Sauer

Magnetar-powered supernova explosions are competitive models for explaining very luminous optical transits. However, these explosion models were mainly calculated in 1D. Radiation emitted from the magnetar snowplows into the previous…

高能天体物理现象 · 物理学 2017-06-22 Ke-Jung Chen

We study experimentally the Bloch-wave instabilities in optically-induced lattices. We reveal two different instability scenarios associated with either the transverse modulational instability of a single Bloch wave, or the nonlinear…

斑图形成与孤子 · 物理学 2007-05-23 Dragomir Neshev , Andrey A. Sukhorukov , Yuri S. Kivshar , Wieslaw Krolikowski

The nonlinearity of magnetization precession and spin waves is a cornerstone of contemporary magnonics. We investigate nonlinear magnetization dynamics in a thin epitaxial iron film driven by femtosecond laser pulses in regimes of…

We analyze 3D numerical simulations of driven incompressible magnetohydrodynamic (MHD) turbulence in a periodic box threaded by a moderately strong external magnetic field. We sum over nonlinear interactions within Fourier wavebands and…

天体物理学 · 物理学 2011-05-10 Jungyeon Cho , Alex Lazarian , Ethan Vishniac

We consider the three-dimensional magnetohydrodynamics system forced by random noise. First, for smooth solutions in the ideal case, the cross helicity remains invariant while the magnetic helicity precisely equals the initial magnetic…

偏微分方程分析 · 数学 2024-10-04 Kazuo Yamazaki

We analyze the modulational instability of nonlinear Bloch waves in topological photonic lattices. In the initial phase of the instability development captured by the linear stability analysis, long wavelength instabilities and bifurcations…

An unsaturated linear magnetoresistance (LMR) has attracted widely attention because of potential applications and fundamental interest. By controlling growth temperature, we realized a metal-to-insulator transition in Al2O3/SrTiO3…

介观与纳米尺度物理 · 物理学 2024-01-09 Gao Kuang Hong , Lin Tie , Ma Xiao Rong , Li Qiu Lin , Li Zhi Qing

The precise manipulation of transverse magnetic domain walls in finite/infinite nanowires with artificial defects under the influence of very short spin-polarized current pulses is investigated. We show that for a classical $3d$ ferromagnet…

介观与纳米尺度物理 · 物理学 2018-01-09 A. Pivano , V. O. Dolocan

We present a comprehensive experimental and numerical study of magnetization dynamics triggered in a thin metallic film by single-cycle terahertz pulses of $\sim20$ MV/m electric field amplitude and $\sim1$ ps duration. The experimental…

In this paper, we study in detail the nonlinear propagation of magnetic soliton in a ferromagnetic film. The sample is magnetized to saturation by an external field perpendicular to film plane. A new generalized (2+1)-dimensional short-wave…

斑图形成与孤子 · 物理学 2024-05-01 Xin-Wei Jin , Shi-Jie Shen , Zhan-Ying Yang , Ji Lin

We study modulational instability in nonlinear arrays of subwavelength metallic nanoparticles, and analyze numerically nonlinear scenarios of the instability development. We demonstrate that modulational instability can lead to the…

光学 · 物理学 2012-06-01 Roman E. Noskov , Pavel A. Belov , Yuri S. Kivshar

A systematic investigation of spin injection behavior in Au/FM (FM = Fe and Ni) multilayers is performed using the superdiffusive spin transport theory. By exciting the nonmagnetic layer, the laser-induced hot electrons may transfer spin…

介观与纳米尺度物理 · 物理学 2023-11-20 Wen-Tian Lu , Zhe Yuan , Xiaohong Xu

Fast reconnection operating in magnetically dominated plasmas is often invoked in models for magnetar giant flares, for magnetic dissipation in pulsar winds, or to explain the gamma-ray flares observed in the Crab nebula, hence its…

高能天体物理现象 · 物理学 2016-07-27 L. Del Zanna , E. Papini , S. Landi , M. Bugli , N. Bucciantini

For the past decade observations of the alignement of PNe symmetries with respect to the galactic disk have led to conflicting results. Recently observational evidence for alignment between PNe and local interstellar magnetic fields in the…

星系天体物理 · 物理学 2015-06-18 Diego Falceta-Goncalves , Hektor Monteiro
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