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We report a Monte Carlo simulation of deposition of magnetic particles on a one-dimensional substrate. Incoming particles interact with those that are already part of the deposit via a dipole-dipole potential. The strength of the dipolar…

凝聚态物理 · 物理学 2009-11-10 F. de los Santos , M. Tasinkevych , J. M. Tavares , P. I. C. Teixeira

Motivated by the observation of localized traveling-wave states (`pulses') in convection in binary liquid mixtures, the interaction of fronts is investigated in a real Ginzburg-Landau equation which is coupled to a mean field. In that…

patt-sol · 物理学 2015-06-26 Henar Herrero , Hermann Riecke

The electronic spectra of long carbon nanotubes (CNTs) can, to a very good approximation, be obtained using the dispersion relation of graphene with both angular and axial periodic boundary conditions. In short CNTs one must account for the…

介观与纳米尺度物理 · 物理学 2019-03-25 Magdalena Marganska , Miriam del Valle , Sung Ho Jhang , Christoph Strunk , Milena Grifoni

Magnetic dissipative droplets are localized, strongly nonlinear dynamical modes excited in nano-contact spin valves with perpendicular magnetic anisotropy. These modes find potential application in nanoscale structures for magnetic storage…

介观与纳米尺度物理 · 物理学 2015-06-17 Ezio Iacocca , Randy K. Dumas , Lake Bookman , Majid Mohseni , Sunjae Chung , Mark A. Hoefer , Johan Åkerman

In this article, we propose a concise theoretical framework based on mixed field-susceptibilities to describe the decay of magnetic dipoles induced by non--magnetic nanostructures. This approach is first illustrated in simple cases in which…

Magnetophoretic force acting on a rigid spherical cluster of single-domain nanoparticles in a constant-gradient weak magnetic field is investigated numerically using the Langevin dynamics simulation method. Nanoparticles are randomly and…

介观与纳米尺度物理 · 物理学 2018-12-05 Andrey A. Kuznetsov

Magnetic properties of the multi-walled nanotubes have been investigated. Heisenberg model, which is a suitable model for the system consist of atoms with localized wave functions has been used. Effective field theory in two spin cluster…

统计力学 · 物理学 2019-01-03 Ümit Akıncı

We analyze the formation of one-dimensional localized patterns in a nonlinear dissipative medium including a set of two narrow "hot spots" (HSs), which carry the linear gain, local potential, cubic self-interaction, and cubic loss, while…

斑图形成与孤子 · 物理学 2011-12-09 Cheng Hou Tsang , Boris A. Malomed , Kwok Wing Chow

Each single domain nano-magnet acts as a magnetic dipole in addition it oscillates its magnetization about the easy axis and rotates coherently depending upon temperature and anisotropy. In an ensemble of nano-magnets, the relaxation time…

介观与纳米尺度物理 · 物理学 2013-02-04 Nilangshu K. Das , P. Barat

We study the low-temperature isothermal magnetic hysteresis of cubical and spherical nanoparticles with ferromagnetic (FM) core - antiferromagnetic (AF) shell morphology, in order to elucidate the sensitivity of the exchange bias effect to…

介观与纳米尺度物理 · 物理学 2017-03-23 V. Dimitriadis , D. Kechrakos , O. Chubykalo-Fesenko , V. Tsiantos

We derive a general quasiclassical approach for long-range magnetic-field quantization effects in superconductors. The method is applied to superclean d-wave superconductors in the mixed state. We study the delocalized states with energies…

超导电性 · 物理学 2009-10-31 N. B. Kopnin , V. M. Vinokur

The magnetization curves of densely packed single domain magnetic nanoparticles (MNP) are investigated by Monte Carlo simulations in the framework of an effective one spin model. The particles whose size polydispersity is taken into account…

材料科学 · 物理学 2014-03-21 V. Russier , C. de-Montferrand , Y. Lalatonne , L. Motte

In systems that exhibit a bistability between nonlinear traveling waves and the basic state, pairs of fronts connecting these two states can form localized wave pulses whose stability depends on the interaction between the fronts. We…

斑图形成与孤子 · 物理学 2013-05-29 Catherine Crawford , Hermann Riecke

We study in this article properties of a nanodot embedded in a support by Monte Carlo simulation. The nanodot is a piece of simple cubic lattice where each site is occupied by a mobile Heisenberg spin which can move from one lattice site to…

统计力学 · 物理学 2021-03-17 Aurélien Bailly-Reyre , Hung T. Diep

With the development of condensed-matter physics and nanotechnology, attention has turned to the fields near and on surfaces that result from interactions between electric dipole radiation and mesoscale structures. It is hoped that studying…

光学 · 物理学 2022-01-07 Qiang Sun , Evert Klaseboer

In this article, we derive a magnetic dipole model for two identical, electrically conducting, and permeable spheres that are exposed to an oscillating homogeneous magnetic field. Our model predicts both amplitude and phase of the induced…

经典物理 · 物理学 2022-12-07 Florian Bönsel , Alfred Müller , Rafael Psiuk

A lattice Boltzmann model with interacting particles was developed in order to simulate the magneto-rheological characteristics of magnetic fluids. In the frame of this model, $6\, +\,1$ species of particles are allowed to move across a…

comp-gas · 物理学 2008-02-03 Victor Sofonea

We have studied spin excitations in nanosized magnetic films in the Heisenberg model with magnetic dipole and exchange interactions by the spin operator diagram technique. Dispersion relations of spin waves in thin magnetic films (in…

介观与纳米尺度物理 · 物理学 2011-11-16 L. V. Lutsev

The discrete and charge-separated nature of matter - electrons and nuclei - results in local electrostatic fields that are ubiquitous in nanoscale structures and are determined by their shape, material, and environment. Such fields are…

We consider plasmonic metasurfaces constituted by an arbitrary periodic arrangement of spherical metallic nanoparticles. Each nanoparticle supports three degenerate dipolar localized surface plasmon (LSP) resonances. In the regime where the…

介观与纳米尺度物理 · 物理学 2020-07-23 François Fernique , Guillaume Weick