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The correlation function of the two dimensional Ising model with the nearest neighbours interaction on the finite size lattice with the periodical boundary conditions is derived. The expressions similar to the form factor expansion are…

高能物理 - 理论 · 物理学 2007-05-23 A. I. Bugrij

An artificial spin ice consisting of numerous ferromagnets has attracted attention because of its applicability to practical devices. The ferromagnets interact through their stray magnetic field and show various functionality. The…

介观与纳米尺度物理 · 物理学 2023-10-27 Tomohiro Taniguchi

Nanopatterned magnetic thin films offer a platform for exploration of tailored magnetic properties such as emergent long-range order. A prominent example is artificial spin ice (ASI), where an arrangement of nanoscale magnetic elements,…

介观与纳米尺度物理 · 物理学 2025-09-16 Anders Strømberg , Einar Digernes , Rajesh Vilas Chopdekar , Jostein Grepstad , Erik Folven

Using extensive numerical simulations, we probe the magnetization switching in two-dimensional artificial spin ice (ASI) system consisting of peanut-shaped nanomagnets. We also investigated the effect of the external magnetic field on the…

介观与纳米尺度物理 · 物理学 2022-05-18 Avinash Chaurasiya , Manish Anand , Rajdeep Singh Rawat

The thermodynamics of a spin-1/2 magnetic multilayer system with antiferromagnetic interplanar couplings is studied using the Pair Approximation method. The special attention is paid to magnetocaloric properties, quantified by isothermal…

材料科学 · 物理学 2014-09-09 Karol Szałowski , Tadeusz Balcerzak

Despite the importance of magnetic fields in massive stars, their origin is widely debated and still not well understood. With the mounting evidence for the importance of studying magnetic fields in interacting massive binary and multiple…

太阳与恒星天体物理 · 物理学 2026-01-21 S. Hubrig , M. Abdul-Masih , S. P. Jarvinen , A. Cikota , M. Schöller , I. Ilyin , A. Escorza

We investigate the interaction between spherical magnetic nanoparticles which present either a single domain or a vortex structure. First the magnetic structure of a uniaxial soft sphere is revisited, and then the interaction energy is…

材料科学 · 物理学 2009-03-31 V. Russier

We present a new model of sequential adsorption in which the adsorbing particles experience dipolar interactions. We show that in the presence of these long-range interactions, highly ordered structures in the adsorbed layer may be induced…

软凝聚态物质 · 物理学 2009-10-31 R. Pastor-Satorras , J. M. Rubi

We explore the magnetic properties of a two-dimensional Hubbard model on an inhomogeneous square lattice, which provides a platform for tuning the bandwidth of the flat band. In its limit, this inhomogeneous square lattice turns into a Lieb…

强关联电子 · 物理学 2023-06-16 Xiao Zhang , Runyu Ma , Zenghui Fan , Zixuan Jia , Lufeng Zhang , Tianxing Ma

Arrays of artificial spin ices exhibit reconfigurable ferromagnetic resonance frequencies that can be leveraged and designed for potential applications.However, analytical and numerical studies of the frequency response of artificial spin…

介观与纳米尺度物理 · 物理学 2024-07-02 Ghanem Alatteili , Victoria Martinez , Alison Roxburgh , Jack C. Gartside , Olle G. Heinonen , Sebastian Gliga , Ezio Iacocca

Artificial spin ices are engineered arrays of dipolarly coupled nanobar magnets. They enable direct investigations of fascinating collective phenomena from their diverse microstates. However, experimental access to ground states in the…

Artificial spin ices (ASI), containing magnetic monopole quasi-particles emerging at room temperature, have been investigated as a promising system to be applied in alternative low-power information technology devices. However, restrictions…

介观与纳米尺度物理 · 物理学 2024-06-26 D. G. Duarte , S. F. de Souza , L. B. de Oliveira , E. B. M. Junior , E. N. D. de Araujo , J. M. Fonseca , C. I. L. de Araujo

We theoretically investigate cooperative effects in cold atomic gases exhibiting both electric and magnetic dipole-dipole interactions, such as occurring for example in clouds of dysprosium atoms. We distinguish between the quantum…

量子气体 · 物理学 2024-05-14 N. S. Bassler , I. Varma , M. Proske , P. Windpassinger , K. P. Schmidt , C. Genes

In this study, we examine how the thermomagnetic characteristics of spin-1/2 Ising trilayer ferrimagnets made of coupled square monolayers with ABA and AAB stacking sequences are affected by controlled site dilution. The system is composed…

统计力学 · 物理学 2026-05-29 Soham Chandra

We study the ground state and magnetic hysteresis properties of 2$d$ arrays ($L^{}_x\times L^{}_y$) of dipolar interacting magnetic nanoparticles (MNPs) by performing micromagnetic simulations. Our primary interest is to understand the…

材料科学 · 物理学 2021-11-02 Manish Anand

Electrons have an intrinsic, indivisible, magnetic dipole aligned with their internal angular momentum (spin). The magnetic interaction between two electrons can therefore impose a change in their spin orientation. This process, however,…

量子物理 · 物理学 2015-02-02 Shlomi Kotler , Nitzan Akerman , Nir Navon , Yinnon Glickman , Roee Ozeri

Anisotropic magnetic colloids with permanent dipole moments exhibit rich field-responsive behavior arising from the interplay between particle geometry, dipolar interactions, and external driving. Modeling these systems remains challenging…

软凝聚态物质 · 物理学 2026-04-07 Jorge L. C. Domingos

Here, we study the magneto-optical interactions in magnetic structures considering the dependence of the interactions with the magnetic field. We perform numerical simulations in a structure of magnetic nanowires, considering them as one…

光学 · 物理学 2023-03-06 Francisco Estrada , José Holanda

Artificial spin ice has become a valuable tool for understanding magnetic interactions on a microscopic level. The strength in the approach lies in the ability of a synthetic array of nanoscale magnets to mimic crystalline materials,…

材料科学 · 物理学 2011-12-23 Stephen A. Daunheimer , Olga Petrova , Oleg Tchernyshyov , John Cumings

We use Monte Carlo simulations to identify the mechanism that allows for phase transitions in dipolar spin ice to occur and survive for applied magnetic field, H, much larger in strength than that of the spin-spin interactions. In the most…

无序系统与神经网络 · 物理学 2009-11-10 Jacob P. C. Ruff , Roger G. Melko , Michel J. P. Gingras