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Related papers: Spatially modulated magnetic structures in thin fi…

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We report that the finite thickness of three-dimensional topological insulator (TI) thin films produces an observable magnetoresistance (MR) in phase coherent transport in parallel magnetic fields. The MR data of Bi2Se3 and (Bi,Sb)2Te3 thin…

Mesoscale and Nanoscale Physics · Physics 2013-07-30 C. J. Lin , X. Y. He , J. Liao , X. X. Wang , V. Sacksteder , W. M. Yang , T. Guan , Q. M. Zhang , L. Gu , G. Y. Zhang , C. G. Zeng , X. Dai , K. H. Wu , Y. Q. Li

A model is introduced for the theoretical description of nanoscale magnetic films with high perpendicular anisotropy. In the model the magnetic film is described in terms of single domain magnetic grains, interacting via exchange as well as…

Condensed Matter · Physics 2009-10-28 U. Nowak

We examine the response of a soft ferromagnetic film to an in-plane applied magnetic field. Our theory, based on asymptotic analysis of the micromagnetic energy in the thin-film limit, proceeds in two steps: first we determine the magnetic…

Materials Science · Physics 2007-05-23 Antonio DeSimone , Robert V. Kohn , Stefan Mueller , Felix Otto , Rudolf Schaefer

When the thickness of the layer is smaller than the electrons mean free path, the morphology affects the conductivity directly based on the layer thickness. This issue provides basis in order to estimate the thickness of the layer by…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 M. Jannesar , G. R. Jafari , S. Vasheghani Farahani , S. Moradi

The equilibrium phase behavior of microphase-forming substances and models is notoriously difficult to obtain because of the extended metastability of the modulated phases. We develop a simulation method based on thermodynamic integration…

Statistical Mechanics · Physics 2015-03-13 Kai Zhang , Patrick Charbonneau

Starting from the three-dimensional setting, we derive a limit model of a thin magnetoelastic film by means of {\Gamma}-convergence techniques. As magnetization vectors are defined on the elastically deformed configuration, our model…

Analysis of PDEs · Mathematics 2020-08-26 Elisa Davoli , Martin Kružík , Paolo Piovano , Ulisse Stefanelli

Ultrathin magnetic films can be modeled as an anisotropic Heisenberg model with long-range dipolar interactions. It is believed that the phase diagram presents three phases: An ordered ferromagnetic phase I, a phase characterized by a…

Statistical Mechanics · Physics 2010-10-22 M. Rapini , R. A. Dias , B. V. Costa

We study magnetic domain patterns in ferromagnetic thin films by numerical simulations for a simple Ising-like model. Magnetic domain patterns after quench demonstrate various types of patterns depending on the field sweep rate and…

Other Condensed Matter · Physics 2009-11-13 Kazue Kudo , Katsuhiro Nakamura

Near room temperature, thin films of MnAs spontaneously align into two phases, one ferromagnetic and the other paramagnetic. These two phases take the intriguing form of nanoscale "wires." In this experiment, we investigate the spontaneous…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 R. Bouskila , R. McAloney , S. Mack , D. D. Awschalom , M. C. Goh , K. S. Burch

We consider the $N$-component Ginzburg-Landau model in the large $N$ limit, the system being embedded in an external constant magnetic field and confined between two parallel planes a distance $L$ apart from one another. On physical…

Superconductivity · Physics 2009-11-10 L. M. Abreu , A. P. C. Malbouisson , J. M. C. Malbouisson , A. E. Santana

Deep neural networks are used to model the magnetization dynamics in magnetic thin film elements. The magnetic states of a thin film element can be represented in a low dimensional space. With convolutional autoencoders a compression ratio…

Ultrathin magnetic films can be modeled as an anisotropic Heisenberg model with long range dipolar interactions. It is believed that the phase diagram presents three phases: A ordered ferromagnetic phase (I), a phase characterized by a…

Computational Physics · Physics 2007-05-23 M. Rapini , R. A. Dias , B. V. Costa

We study the critical behavior of magnetic thin films as a function of the film thickness. We use the ferromagnetic Ising model with the high-resolution multiple histogram Monte Carlo (MC) simulation. We show that though the 2D behavior…

Materials Science · Physics 2015-09-21 X. T. Pham Phu , V. Thanh Ngo , H. T. Diep

Ultrathin L1$_0$ films with different $c$-axis orientations relative to the film plane are promising candidates for data storage materials. In this work, within the framework of density functional theory, we calculated the magnetic…

Materials Science · Physics 2023-12-13 Joanna Marciniak , Mirosław Werwiński

Iron sesquilayers grown at room temperature on W(110) exhibit a pronounced coercivity maximum near a coverage of 1.5 atomic monolayers. On lattices which faithfully reproduce the morphology of the real films, a kinetic Ising model is…

Condensed Matter · Physics 2009-10-30 M. Kolesik , M. A. Novotny , P. A. Rikvold

In previous experiments, thin films of L1$\mathrm{_0}$ FeNi with different surfaces, including (001), (110) and (111), were produced and studied. Each surface defines a different alignment of the crystallographic tetragonal axis with…

Materials Science · Physics 2025-02-17 Joanna Marciniak , Mirosław Werwiński

Polarized neutron reflectometry (PNR) has long been applied to measure the magnetic depth profile of thin films. In recent years, interest has increased in observing lateral magnetic structures in a film. While magnetic arrays patterned by…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 W. -T. Lee , S. G. E. te Velthuis , G. P. Felcher , F. Klose , T. Gredig , D. Dahlberg , B. V. Toperverg

A topological modulation of magnetic thin films can induce a magnetic anisotropy of magnetostatic origin. In this letter, we report on the magnetic properties of NiFe layers deposited on wavy shaped Si substrates. Without any modulation,…

Materials Science · Physics 2009-01-20 J. Briones , F. Montaigne , G. Lengaigne , D. Lacour , M. Hehn

Within a phenomenological approach the density of induced uniaxial anisotropy in nanostructures K(r) is treated as a physical field additional to the magnetization M(r). The equilibrium distributions of K(r) are formed under the influence…

Materials Science · Physics 2007-05-23 A. N. Bogdanov , U. K. Roessler

An exhaustive numerical investigation of the growth of magnetic films in confined $(d+1)$-dimensional stripped geometries ($d=1,2$) is carried out by means of extensive Monte Carlo simulations. Thin films in contact with a thermal bath are…

Condensed Matter · Physics 2009-11-07 Julián Candia , Ezequiel V. Albano