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Related papers: Ordering effects in 2D hexagonal systems of binary…

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We report a detailed investigation of the magnetic order in 192 stable magnetic two-dimensional materials from the Computational 2D Materials Database having one magnetic atom in the unit cell. The calculations are based on a systematic…

Materials Science · Physics 2024-08-09 Joachim Sødequist , Thomas Olsen

Incommensurate (IC) charge-order (CO) and spin density wave (SDW) order in electron doped SrMn1-xWxO3-{\delta} (x= 0.08 to 0.1875) have been studied using neutron diffraction.The study highlights the drastic effect of electron doping on the…

Materials Science · Physics 2019-07-04 Poonam Yadav , Shivani Sharma , Aga Shahee , Ivan da Silva , Vaclav Petricek , N P Lalla

We study a Maxwell-$CP(2)$ model coupled to a real scalar field through a dielectric function multiplying the Maxwell term. In such a context, we look for first-order rotationally symmetric solitons by means of the Bogomol'nyi algorithm,…

High Energy Physics - Theory · Physics 2019-03-29 J. Andrade , R. Casana , E. da Hora , C. dos Santos

To sum up, we show in the present paper that magnetic response in Nb$_2$O$_2$F$_3$ at the high-temperatures ($T>$90 K) is related to the orbital selective regime, when part of the electrons form molecular orbitals while other electrons have…

Materials Science · Physics 2017-05-24 V. V. Gapontsev , D. I. Khomskii , S. V. Streltsov

Recent experiments show that charge-density-wave correlations are prevalent in underdoped cuprate superconductors. The correlations are short ranged at weak magnetic fields but their intensity and spatial extent increase rapidly at low…

Superconductivity · Physics 2016-01-20 Yosef Caplan , Gideon Wachtel , Dror Orgad

Orderings in charge and spin have been extensively studied to unravel their correlation to emergent superconductivity over the past decades. Bragg-Williams order (BWO), a classical structural order parameter describing site occupancy in…

The presence, nature, and impact of chemical short-range order in the multi-principal element alloy CrCoNi are all topics of current interest and debate. First-principles calculations reveal that its origins are fundamentally magnetic,…

Materials Science · Physics 2021-04-02 Flynn Walsh , Mark Asta , Robert O. Ritchie

We combine the BCS self-consistency condition, a semiclassical expansion for the spectral density and interaction matrix elements to describe analytically how the superconducting gap depends on the size and shape of a 2d and 3d…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Antonio M. Garcia-Garcia , Juan Diego Urbina , Emil A. Yuzbashyan , Klaus Richter , Boris L. Altshuler

A general method is presented for modeling high entropy alloys as ensembles of randomly sampled, ordered configurations on a given lattice. Statistical mechanics is applied post hoc to derive the ensemble properties as a function of…

Materials Science · Physics 2022-11-24 Andrew Novick , Quan Nguyen , Roman Garnett , Eric Toberer , Vladan Stevanović

Using Korringa-Kohn-Rostoker coherent-potential approximation in the atomic-sphere approximation (KKR-ASA CPA) method for taking into account the effects of disorder, Gaspari-Gyorffy formalism for calculating the electron-phonon coupling…

Superconductivity · Physics 2009-11-07 P. Jiji Thomas Joseph , Prabhakar P. Singh

The AlCrTiV high entropy alloy undergoes an order-disorder transition from body centered cubic (Strukturbericht A2) at high temperatures to the CsCl structure (B2) at intermediate temperatures. We model this transition using first…

Materials Science · Physics 2024-07-02 Michael Widom

Recently, there has been a resurgence of intense experimental and theoretical interest on the Kondo physics of nanoscopic and mesoscopic systems due to the possibility of making experiments in extremely small samples. We have carried out…

Strongly Correlated Electrons · Physics 2007-05-23 N. Kioussis , Y. Luo , C. Verdozzi

We investigate the structure of 13-particle clusters in binary alloys for various size ratios and different concentrations via MD simulation. Our goal is to predict which systems are likely to form local icosahedral structures when rapidly…

Condensed Matter · Physics 2007-05-23 Stefano Cozzini , Marco Ronchetti

There is a growing interest, inspired by advances in technology, in the low temperature physics of thin films. These quasi-2D systems show a wide range of ordering effects including formation of striped states, reorientation transitions,…

Statistical Mechanics · Physics 2009-11-13 Alessandro Giuliani , Joel L. Lebowitz , Elliott H. Lieb

The effect of chemical short-range order (CSRO) on primary radiation damage in MoNbTaVW high-entropy alloys is investigated using hybrid Monte Carlo/molecular dynamics simulations with a machine-learned potential. We show that CSRO enhances…

Materials Science · Physics 2025-07-17 Jiahui Liu , Shuo Cao , Yanzhou Wang , Zheyong Fan , Guocai Lv , Ping Qian , Yanjing Su

The phase stability of fcc and bcc magnetic binary Fe-Cr, Fe-Ni, Cr-Ni alloys and ternary Fe-Cr-Ni alloys is investigated using a combination of density functional theory (DFT), Cluster Expansion (CE) and Magnetic Cluster Expansion (MCE).…

Materials Science · Physics 2015-02-03 Jan S. Wrobel , Duc Nguyen-Manh , Mikhail Yu. Lavrentiev , Marek Muzyk , Sergei L. Dudarev

We here study electronic structure and magnetic properties of disordered CoPd and CoPt alloys using Augmented Space Recursion technique coupled with the tight-binding linearized muffin tin orbital (TB-LMTO) method. Effect of short range…

Materials Science · Physics 2019-08-17 Subhradip Ghosh , Chhanda Basu Chaudhuri , Biplab Sanyal , Abhijit Mookerjee

One of the not-yet determined properties of neutrinos is the ordering of their mass eigenstates. We combine the available data from neutrino oscillations, neutrinoless double beta decay and Cosmic Microwave Background observations to derive…

High Energy Physics - Phenomenology · Physics 2018-07-02 S. Gariazzo

Using high-accuracy variational Monte Carlo based on group-convolutional neural networks (GCNNs), we obtain the symmetry-resolved low-energy spectrum of the spin-1/2 Heisenberg model on several highly symmetric fullerene geometries,…

Strongly Correlated Electrons · Physics 2024-02-12 Attila Szabó , Sylvain Capponi , Fabien Alet

We build random forests models to predict elastic properties and mechanical hardness of a compound, using only its chemical formula as input. The model training uses over 10,000 target compounds and 60 features based on stoichiometric…

Materials Science · Physics 2021-07-22 Wei-Chih Chen , Joanna N. Schmidt , Da Yan , Yogesh K. Vohra , Cheng-Chien Chen