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Inspired by the synthesis of the high-pressure Fm-3m LaH10 superconducting superhydride, systematic density functional theory (DFT) calculations are performed to study ternaries that could be derived from it by replacing two of the hydrogen…

超导电性 · 物理学 2024-01-02 Nisha Geng , Katerina P. Hilleke , Francesco Belli , Pratik Kumar Das , Eva Zurek

In the ongoing search for innovative thermoelectric (TE) materials with superior TE performance globally, we aim to investigate the possible use of half-Heusler alloy CoHfSi in TE applications. We analyzed the structure stability,…

材料科学 · 物理学 2025-06-27 Sadhana Matth , S. Pandey , Himanshu Pandey

We present a Density Functional Theory (DFT) based first-principles study on iron chalcogenides superconductor FeSe, systematically investigating pressure and doping induced modifications to its electronic, magnetic, and lattice dynamical…

材料科学 · 物理学 2025-04-17 Abyay Ghosh , Piotr Chudzinski , Myrta Grüning

In this paper, we performed a detailed theoretical study of structural, elastic and electronic properties of two germanides LuAuGe and ScAuGe by means of first-principles calculations using the pseudopotential plane-wave method within the…

材料科学 · 物理学 2021-03-30 M. Radjai , N. Guechi , D. Maouche

We investigated the structural, elastic, electronic, vibrational, optical, thermodynamic and a number of thermophysical properties of W2N3 in this study using DFT based formalisms. The mechanical and dynamical stabilities have been…

材料科学 · 物理学 2024-02-26 Istiak Ahmed , F. Parvin , R. S. Islam , S. H. Naqib

The recent discovery of superconductivity in Ruddlesden-Popper bilayer nickelate La3Ni2O7 under pressure has drawn a lot of interest. La3Ni2O7 is isostructural with cuprates in some respect. Investigation of its properties will undoubtedly…

超导电性 · 物理学 2025-04-23 Md. Enamul Haque , Ruman Ali , M. A. Masum , Jahid Hassan , S. H. Naqib

Optimal characterization of the mechanical properties of both cells and their surrounding is an issue of major interest. Indeed, cell function and development are strongly influenced by external stimuli. Furthermore, a change in cell…

Two-dimensional transition metal dichalcogenides (TMDCs) have been extensively investigated due to their tunable properties. In this work, density functional theory (DFT) is employed to investigate the adsorption behavior and sensing…

材料科学 · 物理学 2026-01-22 Neeraj Thakur , Anjna Bhardwaj , Arun Kumar , Amarjeet Singh

The ability in experiments to control the relative twist angle between successive layers in two-dimensional (2D) materials offers a new approach to manipulating their electronic properties; we refer to this approach as "twistronics". A…

介观与纳米尺度物理 · 物理学 2017-02-22 Stephen Carr , Daniel Massatt , Shiang Fang , Paul Cazeaux , Mitchell Luskin , Efthimios Kaxiras

A model system is proposed to investigate the chemical equilibrium and mechanical stability of biological spherical-like nanoshells in contact with an aqueous solution with added dissociated electrolyte of a given concentration. The ionic…

软凝聚态物质 · 物理学 2020-02-06 Thiago Colla , Amin Bakhshandeh , Yan Levin

The structural, vibrational, thermodynamical and optical properties of technologically important, weakly coupled MAX compound, Sc2AlC are calculated using density functional theory (DFT). The structural properties of Sc2AlC are compared…

材料科学 · 物理学 2016-10-12 M. A. Ali , M. T. Nasir , M. R. Khatun , A. K. M. A. Islam , S. H. Naqib

The response of the worldwide scientific community to the discovery in 2008 of superconductivity at Tc = 26 K in the Fe-based compound LaFeAsO_{1-x}F_x has been very enthusiastic. In short order, other Fe-based superconductors with the same…

超导电性 · 物理学 2015-03-17 David C. Johnston

To explore the potential of molecular gas treatment of freshly cut lithium foils in non-electrolyte based passivation of high energy-density Li anodes, density functional theory (DFT) has been used to study the decomposition of molecular…

材料科学 · 物理学 2015-06-01 Stephan L. Koch , Benjamin J. Morgan , Stefano Passerini , Gilberto Teobaldi

Density-functional-theory (DFT) calculations have been performed on the Li-Si and Li-Ge systems. Lithiated Si and Ge, including their metastable phases, play an important technological r\^ole as Li-ion battery (LIB) anodes. The calculations…

材料科学 · 物理学 2015-06-18 Andrew J. Morris , C. P. Grey , C. J Pickard

Elastic constant C_{11} and piezoelectric stress constant e_{1,11} of two-dimensional (2D) dielectric materials comprising h-BN, 2H MoS2 and other transition metal dichalcogenides (TMDCs) and -dioxides (TMDOs) are calculated using lattice…

材料科学 · 物理学 2017-04-05 K. H. Michel , D. Cakır , C. Sevik , F. M. Peeters

We report the computational discovery and characterization of Dodecaphenylyne (DP), a novel carbon allotrope with a distinctive geometric arrangement. DP structural, thermodynamic, mechanical, electronic, and optical properties were…

Two-dimensional iron-chalcogenide intercalates display a remarkable correlation of the interlayer spacing with the enhancement of the superconducting critical temperature ($T_c$). In this work, synchrotron x-ray absorption ($XAS$, at Fe and…

We study the structural, electronic, and magnetic properties of Co$_2$ZAl compounds employing a pseudopotential electronic bandstructure method. The stability of the compounds is established through the formation and cohesive energy…

材料科学 · 物理学 2020-08-11 Sashi Nepal , Ramesh Dhakal , Iosif Galanakis

Magnesium hydride has great potential as a solid hydrogen (H) storage material because of its high H storage capacity of 7.6 wt%. However, its slow hydrogenation and dehydrogenation kinetics and the high temperature of 300 $^\circ$C…

材料科学 · 物理学 2023-04-25 R. Kadono , M. Hiraishi , H. Okabe , A. Koda , T. U. Ito

The diverse electronic properties of transition metal chalcogenides can be very sensitive to crystal imperfections. A new crystal growth technique, known as horizontal flux transport, offers a route to improved crystal quality. By refining…