Results 91 to 100 of about 133,879 (298)
Diverse Landscape of Tunable Magnetic, Topological, and Ferroelectric States in 2D Ti3Se3Te2
Advanced Science, EarlyView.Ti3Se3Te2 emerges as a multifunctional 2D van der Waals platform. The monolayer is a dynamically stable ferromagnetic quantum anomalous Hall insulator. In bilayers, two stacking configurations yield distinct phases: AA‐stacking hosts an altermagnetic quantum spin Hall insulator, while AA′‐stacking exhibits three‐state in‐plane ferroelectricity ...
Jiangtao Yu +5 more
wiley +1 more source
A modified atmospheric non-hydrostatic model on low aspect ratio grids: part II
Tellus: Series A, Dynamic Meteorology and Oceanography, 2013 Sun et al. (2012) proposed a modified non-hydrostatic model (MNH), in which the left-hand side of the continuity equation is multiplied by a parameter δ (4≤δ≤16 in the article) to suppress high-frequency acoustic waves.
Wen-Yih Sun +2 more
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Broadening Hard‐Magnet Discovery Beyond Symmetry Constraints via Unified Effective Anisotropy
Advanced Science, EarlyView.A unified effective‐anisotropy descriptor (Keff) extends hard‐magnet screening across all seven crystal systems, beyond the uniaxial restriction of conventional searches. Machine‐learning screening of 9320 known ferromagnets and diffusion‐model generation together yield 38 rare‐earth‐free or ‐lean candidates with DFT‐validated magnetic hardness (κ > 1),
Hojae Kim +5 more
wiley +1 more source
Eigenvalue problem and its various generalizations
, 2020 Cílem práce zpracovat základní poznatky týkající se úlohy vlastních čísel(čtvercových) matic, zejména věty o spektrálním, Schurově, resp. Jordanově rozkladu,a zavést základní pojmy jako je charakteristický polynom, průvodní maticepolynomu, algebraická a ...
Šikola, Jiří
core +1 more source
Combinatorica, 1986 Let \(G=(V,E)\) be a graph. An \((n,d,c)\)-expander is any bipartite graph on the sets of vertices \(I\) (inputs) and \(O\) (outputs), where \(| I| =| O| =n\), the maximal degree of vertices is \(\underline{d}\), and \[ \operatorname{card} \{v\in V\mid vx\in E\text{ for some }x\in X\}\geq [1+c(1- \alpha /n)]\cdot \alpha, \] whenever \(X\subseteq I ...
openaire +3 more sources
Model Order Selection for Collision Multiplicity Estimation [PDF]
, 2012 The collision multiplicity (CM) is the number of users involved in a collision. The CM estimation is an essential step in multi-packet reception (MPR) techniques and in collision resolution (CR) methods.
Benoit Escrig, Escrig, Benoît
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On $\alpha$-spectral theory of a directed k-uniform hypergraph [PDF]
Computer Science Journal of Moldova, 2020 In this paper, we study a k-uniform directed hypergraph in general form and introduce its adjacency tensor, Laplacian tensor and signless Laplacian tensor. For the $k$-uniform directed hypergraph $\mathcal{H}$ and $0\leq \alpha
Gholam-Hasan Shirdel +2 more
doaj
Open Mathematics, 2020 In this paper, we discuss the monotonicity of the first nonzero eigenvalue of the Laplace operator and the p-Laplace operator under a forced mean curvature flow (MCF).
Qi Xuesen, Liu Ximin
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Advanced Science, EarlyView.Interlayer sliding in the RuO2Zn2F2 bilayer induces ferroelectricity and enables reversible valley polarization switching. The electric dipole and valley‐resolved band edges are intimately coupled, revealing sliding ferroelectricity as a powerful mechanism for electrical control of valley degrees of freedom in 2D materials.
Djamel Bezzerga +3 more
wiley +1 more source
Giant Bulk Photovoltaic Effect in Two‐Dimensional Topological Ferroelectric Semimetal
Advanced Science, EarlyView.ABSTRACT Ferroelectric (FE) metals have attracted growing interest because they combine ferroelectricity with metallic behavior and enable polarization‐controlled band topology near the Fermi level. However, the number of known ferroelectric metals is still limited.
Jianhua Wang +8 more
wiley +1 more source