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The two-dimensional multifractal detrended fluctuation analysis is applied to reveal the multifractal properties of the fracture surfaces of foamed polypropylene/polyethylene blends at different temperatures. Nice power-law scaling…

Materials Science · Physics 2009-01-03 Chuang Liu , Xiu-Lei Jiang , Tao Liu , Ling Zhao , Wei-Xing Zhou , Wei-Kang Yuan

A multifractal model is used to analyze neutron evolution within a reactor. For chain reactions, various characteristics of multifractal neutron behavior have been determined. These include the dimension of the multifractal carrier,…

Disordered Systems and Neural Networks · Physics 2026-01-26 V. V. Ryazanov

In this paper, we consider definitions including $(q, \vartheta)$-Bowen topological entropy and $(q, \vartheta)$-packing topological entropy. We systematically explore their properties and measurability and analyze the relationship between…

Dynamical Systems · Mathematics 2025-03-03 Tingting Wang , Bilel Selmi , Zhiming Li

X-ray spectroscopy measurements have been performed on a series of Pt/Co/AlOx trilayers to investigate the role of Co oxidation in the perpendicular magnetic anisotropy of the Co/AlOx interface. It is observed that high temperature…

In this study, we achieved the improvement of uniaxial perpendicular magnetic anisotropy (PMA) in the W/MgAl2O4/CoFeMnSi/W/CoFeMnSi/MgAl2O4/W heterostructure by manipulating the annealing temperature (TA) [350 C, 450 C, and 550 C]. We…

Materials Science · Physics 2024-08-27 L. Saravanan , Nanhe Kumar Gupta , Vireshwar Mishra , Sujeet Chaudhary , Carlos Garcia

In rotationally constrained percolation models, a site of a percolation cluster could be occupied more than once from different directions due to the nature of the rotational constraint. A state variable $s_i$ is assigned to each lattice…

Soft Condensed Matter · Physics 2009-11-13 Santanu Sinha , S. B. Santra

We study the modification of the magnetocrystalline anisotropy (MCA) of Co slabs induced by several different conjugated molecular overlayers, i.e., benzene, cyclooctatetraene, naphthalene, pyrene and coronene. We perform first-principles…

Materials Science · Physics 2024-01-31 Anita Halder , Sumanta Bhandary , David D. O'Regan , Stefano Sanvito , Andrea Droghetti

The anisotropy parameter of two-dimensional equilibrium clusters of site percolation process in long-range self-affine correlated structures are studied numerically. We use a fractional Brownian Motion(FBM) statistic to produce both…

Statistical Mechanics · Physics 2008-09-01 Fatemeh Ebrahimi

The percolation behavior of aligned rigid rods of length $k$ ($k$-mers) on two-dimensional triangular lattices has been studied by numerical simulations and finite-size scaling analysis. The $k$-mers, containing $k$ identical units (each…

Statistical Mechanics · Physics 2019-11-13 P. Longone , P. M. Centres , A. J. Ramirez-Pastor

Shear deformation of partially molten rock in laboratory experiments causes the emergence of melt-enriched sheets (bands in cross-section) that are aligned at about 15-20 degrees to the shear plane. Deformation and deviatoric stress also…

Geophysics · Physics 2015-10-28 Jesse Taylor-West , Richard F. Katz

We study the multifractal properties of diffusion in the presence of an absorbing polymer and report the numerical values of the multifractal dimension spectra for the case of an absorbing self avoiding walk or random walk.

Condensed Matter · Physics 2007-05-23 Christian von Ferber , Yurij Holovatch

In this paper we study anisotropic oriented percolation on $\mathbb{Z}^d$ for $d\geq 4$ and show that the local condition for phase transition is closely related to the mean-field condition. More precisely, we show that if the sum of the…

Probability · Mathematics 2021-06-22 Pablo Almeida Gomes , Alan Pereira , Remy Sanchis

Given a graph $G$, we consider a model for a random cover of $G$ by taking two parallel copies of $G$ and crossing every pair of parallel edges randomly with probability $q$ independently of each other. The resulting graph $G_q$, is a…

Probability · Mathematics 2025-06-03 Paul Drouvillé

Statistical evidence of the influence of neighborhood topology on the performance of particle swarm optimization (PSO) algorithms has been shown in many works. However, little has been done about the implications could have the percolation…

Artificial Intelligence · Computer Science 2012-04-18 Blanca Cases , Alicia D'Anjou , Abdelmalik Moujahid

The electric field effect on magnetic anisotropy was studied in an ultrathin Fe(001) monocrystalline layer sandwiched between Cr buffer and MgO tunnel barrier layers, mainly through post-annealing temperature and measurement temperature…

It is argued that large-scale ($>7^o$) cosmic microwave background anisotropy detected in COBE cosmic experiment can be considered as a trace of the quantum gravity fractal structure.

Astrophysics · Physics 2008-02-03 M. V. Altaisky , V. A. Bednyakov , S. G. Kovalenko

For a function $f$ which foliates a one-sided neighbourhood of a closed hypersurface $M$, we give an estimate of the distance of $M$ to a Wulff shape in terms of the $L^{p}$-norm of the traceless $F$-Hessian of $f$, where $F$ is the support…

Analysis of PDEs · Mathematics 2024-11-15 Julian Scheuer , Xuwen Zhang

We study continuum percolation of overlapping circular discs of two sizes. We propose a phenomenological scaling equation for the increase in the effective size of the larger discs due to the presence of the smaller discs. The critical…

Statistical Mechanics · Physics 2012-05-03 Ajit C. Balram , Deepak Dhar

In this work, we numerically study the elastic contact between isotropic and anisotropic, rigid, randomly rough surfaces and linearly elastic counterfaces as well as the subsequent Reynolds flow through the gap between the two contacting…

Soft Condensed Matter · Physics 2020-10-27 Anle Wang , Martin H. Müser

We study interfacial magnetocrystalline anisotropies in various Fe/semiconductor heterostructures by means of first-principles calculations. We find that many of those systems show perpendicular magnetic anisotropy (PMA) with a positive…

Materials Science · Physics 2017-11-03 Keisuke Masuda , Shinya Kasai , Yoshio Miura , Kazuhiro Hono