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Based on first-principles calculations, we have investigated the structural stability, electronic structures, and thermal properties of the monolayer XSi2N4 (X= Ti, Mo, W) and their lateral (LH) and vertical heterostructures (VH). We find…

Materials Science · Physics 2022-03-29 Ghulam Hussain , Mazia Asghar , Muhammad Waqas Iqbal , Hamid Ullah , Carmine Autieri

Using first-principles calculations within the generalized gradient approximation, we predicted the lattice parameters, elastic constants, vibrational properties, and electronic structure of cementite (Fe3C). Its nine single-crystal elastic…

Materials Science · Physics 2009-11-13 Chao Jiang , S. G. Srinivasan , A. Caro , S. A. Maloy

Weyl semimetal (WSM) states can be achieved by breaking spatial-inversion symmetry or time reversal symmetry. However, the anisotropy of the energy reduction contributing to the emergence of WSM states has seldom been investigated by…

Al/ maleic anhydride (MA) /p-Si organic Schottky devices were fabricated on a p-Si semiconductor wafer by spin coating. The frequency and voltage dependent dielectric constant of Al/MA/p-Si have been investigated. Dielectric properties and…

Materials Science · Physics 2016-04-27 S. Bilge Ocak , A. B. Selçuk , S. B. Bayram , A. Ozbay

We study the anisotropic in-plane optical conductivity of detwinned Ba(Fe1-xCox)2As2 single crystals for x=0, 2.5% and 4.5% in a broad energy range (3 meV-5 eV) across their structural and magnetic transitions. For temperatures below the…

Strongly Correlated Electrons · Physics 2016-11-25 A. Lucarelli , A. Dusza , A. Sanna , S. Massidda , J. -H. Chu , I. R. Fisher , L. Degiorgi

tructural transformation, pressure dependent elasticity behaviors, phonon, and thermodynamic properties of the equiatomic TiZr alloy are investigated by using first-principles density-functional theory. Our calculated lattice parameters and…

Materials Science · Physics 2011-12-06 Bao-Tian Wang , Wei-Dong Li , Ping Zhang

We report the structural, magnetic, and magnetocaloric properties of Co$_2$Cr$_{1-x}$Ti$_x$Al ($x=$ 0--0.5) Heusler alloys for spintronic and magnetic refrigerator applications. Room temperature X-ray diffraction and neutron diffraction…

Materials Science · Physics 2019-11-06 Priyanka Nehla , Yousef Kareri , Guru Dutt Gupt , James Hester , P. D. Babu , Clemens Ulrich , R. S. Dhaka

Chemically exfoliated nanoscale few-layer thin Li$_x$CoO$_2$ samples are studied as function of annealing at various temperatures, using transmission electron microscopy (TEM) and Electron Energy Loss Spectroscopies (EELS), probing the O-K,…

The structural and thermal properties of bulk Td-WTe2 have been studied by using first-principles calculations. We find that the lattice thermal conductivity of WTe2 is anisotropic, with the highest value along a-axis and lowest one along…

Mesoscale and Nanoscale Physics · Physics 2016-03-23 Gang Liu , Hong Yi Sun , Jian Zhou , Qing Fang Li , X. G. Wan

Achieving high thermoelectric performance requires efficient manipulation of thermal conductivity and a fundamental understanding of the microscopic mechanisms of phonon transport in crystalline solids. One of the major challenges in…

Materials Science · Physics 2023-05-18 Jiaoyue Yuan , Yubi Chen , Bolin Liao

We have carried out a first principles study of the elastic properties and electronic structure for two room-temperature stable Pt silicide phases, tetragonal alpha-Pt_2Si and orthorhombic PtSi. We have calculated all of the equilibrium…

Materials Science · Physics 2009-10-31 O. Beckstein , J. E. Klepeis , G. L. W. Hart , O. Pankratov

Recently, $\beta$-Te (atomically 2D tellurium) with rectangular crystal structure has been synthesized successfully on highly oriented pyrolytic graphite substrates by using molecular beam epitaxy. It has been found possessing remarkable…

Materials Science · Physics 2019-05-21 Gang Liu , Zhibin Gao , Jie Ren

Experimental studies on moir\'e materials have predominantly focused on twisted hexagonal lattice with low-energy states near the $\Gamma$- or K-points, where the electronic dispersion is typically isotropic. In contrast, we introduce a…

Mesoscale and Nanoscale Physics · Physics 2025-07-30 Kejie Bao , Huan Wang , Zhaochen Liu , Jing Wang

We investigate the effect of Mn substitution in Fe$_2$Ti$_{1-x}$Mn$_x$Sn on electronic structure and magnetic and electrical transport properties. The spin-polarized density of states calculations using density-functional theory (DFT)…

Materials Science · Physics 2025-08-20 Kulbhushan Mishra , Shishir Kumar Pandey , S. Chaudhuri , Rajeev Rawat , P. A. Bhobe

It has recently been demonstrated that MoS2 with irregular interlayer rotations can achieve an extreme anisotropy in the lattice thermal conductivity (LTC), which is for example of interest for applications in waste heat management in…

Materials Science · Physics 2024-03-22 Fredrik Eriksson , Erik Fransson , Christopher Linderälv , Zheyong Fan , Paul Erhart

In this work, we report on the mechanical responses and fracture behavior of pristine and defected monolayer 1T-Titanium Disulfide using classical molecular dynamics simulation. We investigated the effect of temperature, strain rate and…

Materials Science · Physics 2020-03-18 Tanmay Sarkar Akash , Rafsan A. S. I. Subad , Pritom Bose , Md Mahbubul Islam

The electrical resistivity, thermoelectric power and electronic thermal conductivity of simple (isotropic) metals are studied in a uniform way. Starting from results of a variational solution of the Boltzmann equation, a generalized…

Materials Science · Physics 2009-11-07 M. Ausloos , K. Durczewski , J. Ulner

Metal hydrides (MH) are often preferred to absorb and desorb hydrogen at ambient temperature and pressure with a high volumetric density. These hydrogen storage alloys create promising prospects for hydrogen storage and can solve the…

Materials Science · Physics 2012-07-17 N. G. Anagnostou , S. S. Makridis , E. S. Kikkinides , C. N. Christodoulou , A. K. Stubos

We utilize the van de Pauw technique combined with Density Functional Theory to show that an external voltage applied to superconducting AlB2-type compounds, such as MgB2 and Mg(B1.9C0.1), effects substantive changes in transition…

Superconductivity · Physics 2022-04-04 Jose A. Alarco , Mahboobeh Shahbazi , Ian D. R. Mackinnon

BaPd2As2 belongs to 122 pnictide group, famous for exhibiting superconductivity at high temperatures and other electronic correlations. Unlike the 122 iron arsenides, BaPd2As2 exhibits superconductivity at low temperature when realized in…

Superconductivity · Physics 2018-10-31 F. Parvin , S. H. Naqib