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Related papers: Exotic structures on magnetic multilayers

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By means of three dimensional high-resolution hybrid simulations we study the properties of the magnetic field spectral anisotropies near and beyond ion kinetic scales. By using both a Fourier analysis and a local analysis based on…

Solar and Stellar Astrophysics · Physics 2019-04-18 Simone Landi , Luca Franci , Emanuele Papini , Andrea Verdini , Lorenzo Matteini , Petr Hellinger

The unexpected finding of a strong magnetic field dependence of the dielectric properties of insulating glasses at very low temperatures has been a puzzling problem since its discovery. Several attempts have been made to explain this…

Disordered Systems and Neural Networks · Physics 2007-05-23 S. Ludwig , P. Nagel , S. Hunklinger , C. Enss

We observe a thermally induced spontaneous magnetization reversal of epitaxial ferromagnet/antiferromagnet heterostructures under a constant applied magnetic field. Unlike any other magnetic system, the magnetization spontaneously reverses,…

Materials Science · Physics 2009-11-11 Zhi-Pan Li , Johannes Eisenmenger , Casey W. Miller , Ivan K. Schuller

An attractive feature of magnetic adatoms and molecules for nanoscale applications is their superparamagnetism, the preferred alignment of their spin along an easy axis preventing undesired spin reversal. The underlying magnetic anisotropy…

Mesoscale and Nanoscale Physics · Physics 2014-07-22 Maciej Misiorny , Michael Hell , Maarten R. Wegewijs

The magnetic and transport properties of La_{0.5}Sr_{0.5}CoO_{3-\delta} film grown on a LaAlO_3 substrate by pulsed-laser deposition are studied. The properties are found to be influenced by the magnetic anisotropy and inhomogeneity.…

Materials Science · Physics 2009-11-10 B. I. Belevtsev , V. B. Krasovitsky , A. S. Panfilov , I. N. Chukanova

Anisotropic antiferromagnetic systems of dimensionality greater than one in an external field are shown to exhibit a complicated array of ground states depending on the spin structure of the surface. The simplest structure that exhibits…

Materials Science · Physics 2009-11-10 B. A. Ivanov , C. E. Zaspel , A. Yu. Merkulov

Extragalactic jets are visualized as dynamic erruptive events modelled by time-dependent magnetohydrodynamic (MHD) equations. The jet structure comes through the temporally self-similar solutions in two-dimensional axisymmetric spherical…

Astrophysics · Physics 2008-11-26 K. H. Tsui , A. Serbeto

Superpositions of spin helices can yield topological spin textures, such as two-dimensional vortices and skyrmions, and three-dimensional hedgehogs. Their topological nature and spatial dimensionality depend on the number and relative…

Strongly Correlated Electrons · Physics 2021-02-24 Kotaro Shimizu , Shun Okumura , Yasuyuki Kato , Yukitoshi Motome

Thin magnetic multilayered films containing FePt have attracted a lot of attention recently due to their possible usage in ultra-high density magnetic storage. Although structure defects play a dramatic role in the magnetization process and…

Mesoscale and Nanoscale Physics · Physics 2016-01-27 E. M. Plotnikova , I. I. Trushkin , D. A. Lenkevich , A. L. Kotelnikov , A. Cockburn , K. A. Zvezdin

We demonstrate that in a chiral plasma subject to an external magnetic field, the chiral vortical effect can induce a new type of magnetohydrodynamic instability which we refer to as the {\it chiral magnetovortical instability}. This…

Nuclear Theory · Physics 2023-07-14 Shuai Wang , Xu-Guang Huang

We have observed the spatial inhomogeneity of the electronic structure of a single-crystalline electron-doped EuO thin film with ferromagnetic ordering by employing infrared magneto-optical imaging with synchrotron radiation. The uniform…

Strongly Correlated Electrons · Physics 2008-09-09 S. Kimura , T. Ito , H. Miyazaki , T. Mizuno , T. Iizuka , T. Takahashi

We study the composition dependent evolution of geometric and magnetic structures of MnO clusters within density functional theory. A systematic and extensive search through the potential energy surface is performed to identify the correct…

Materials Science · Physics 2018-10-16 Shreemoyee Ganguly , Mukul Kabir , Carmine Autieri , Biplab Sanyal

The generalized Fisher super-exchange antiferromagnetic model with uniaxial crystal-field anisotropy is exactly investigated using an extended mapping technique. An exact relation between partition function of the studied system and that…

Statistical Mechanics · Physics 2007-05-23 Lucia Canova , Michal Jascur

Two-dimensional materials supporting deep-subwavelength plasmonic modes can also exhibit strong magneto-optical responses. Here, we theoretically investigate magnetoplasmons (MPs) in monolayer black phosphorus (BP) structures under moderate…

The problem of the spontaneous breaking of the symmetry in the crystals with variable composition is discussed. The character of the variation of the inhomogeneous superstructure depending on the substitutional atom concentration has been…

Statistical Mechanics · Physics 2007-05-23 B. R. Gadjiev

We present magnetotransport results for a 2D electron gas (2DEG) subject to the quasi-random magnetic field produced by randomly positioned sub-micron Co dots deposited onto the surface of a GaAs/AlGaAs heterostructure. We observe strong…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. W. Rushforth , B. L. Gallagher , P. C. Main , A. C. Neumann , M. Henini , C. H. Marrows , B. J. Hickey

Magnetohydrodynamic (MHD) instabilities can play an important role in the dynamics of the pulsar magnetosphere and can be responsible for the formation of various structures. We consider the instability caused by a gradient of the magnetic…

Solar and Stellar Astrophysics · Physics 2014-03-05 Vadim Urpin

We discuss the appareance of ordered structures in assemblies of magnetic particles. The phenomenon occurs when dipolar interactions and the thermal motion of the particles compete, and is mediated by screening and excluded volume effects.…

Soft Condensed Matter · Physics 2009-10-31 R. Pastor-Satorras , J. M. Rubi

Two-dimensional magnets are promising for nanoscale spintronic applications. Currently, most available candidates are based on $3d$ transition metal compounds, with hexagonal or honeycomb lattice geometry. Here, a GdCl$_3$ monolayer with…

Materials Science · Physics 2022-04-29 Haipeng You , Jun Chen , Jun-Jie Zhang , Ning Ding , Xiwen Zhang , Xiaoyan Yao , Shuai Dong

We present a model to describe complex phases observed at mesoscopic scales in ultrathin magnetic films. The model is based on the interaction between dipolar as well as quadrupolar magnetic moments. In the special case of strong…

Statistical Mechanics · Physics 2010-05-21 Daniel G. Barci , Daniel A. Stariolo