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Taking into considerations the wide compositional stretch of Heusler alloys, the first principles density functional theory based calculations are excellently suitable for estimating the multifaceted properties of alkali metal based LiVSb…

材料科学 · 物理学 2024-07-03 Diwaker , Shyam L. Gupta , Anupam , Sumit Kumar , Aadil Fayaz , Ashwani Kumar

Electronic band structure and optical properties of zinc monochalcogenides with zinc-blende- and wurtzite-type structures were studied using the ab initio density functional method within the LDA, GGA, and LDA+U approaches. Calculations of…

软凝聚态物质 · 物理学 2009-11-13 S. Zh. Karazhanov , P. Ravindran , A. Kjekshus , H. Fjellvag , B. G. Svensson

Density functional theory (DFT) based first-principles investigations of structural, elastic, electronic band structure, and optical properties of superconducting ternary phosphides (BaM2P2; M = Ni, Rh) have been carried out in this study.…

材料科学 · 物理学 2020-04-01 Md. Maruf Mridha , S. H. Naqib

In this study, we have used density functional theory (DFT) based first-principles investigation of the physical properties of prospective NbAlB compound for the first time. From the analysis of the cohesive energy and enthalpy of…

材料科学 · 物理学 2023-05-23 Mst. Bina Aktar , F. Parvin , A. K. M. Azharul Islam , S. H. Naqib

We present a comprehensive first-principles study of the structural and elastic properties of 2H-MX$_2$ transition metal dichalcogenides (TMDs) (M = W, Mo, Ta, Nb; X = S, Se). Using density functional theory with various van der Waals…

材料科学 · 物理学 2025-05-12 S. Azadi , A. Azhar , R. V. Belosludov , T. D. Kühne , M. S. Bahramy

First-principles density functional theory (DFT) calculations of Lu-H-N compounds reveal low-energy configurations of Fm$\overline{3}$m Lu$_{8}$H$_{23-x}$N structures that exhibit novel electronic properties such as flat bands, sharply…

材料科学 · 物理学 2024-02-27 Adam Denchfield , Hyowon Park , Russell J. Hemley

In this article, we use hybrid density functional (HSE06) to study the crystal and electronic structures and optical properties of well known phase change memory material $\mathrm{Ge_{2}Sb_{2}Te_{5}}$. We calculate the structural…

材料科学 · 物理学 2015-06-05 T. Kaewmaraya , M. Ramzan , 1 H. Löfås , Rajeev Ahuja

The electronic band structure and elastic properties of the Cd${}_{16}$Se${}_{15}$Te solid state solution in the framework of the density functional theory calculations are investigated. The structure of the sample is constructed on the…

材料科学 · 物理学 2021-06-28 A. I. Kashuba , B. Andriyevsky , H. A. Ilchuk , R. Yu. Petrus , T. S. Malyi , I. V. Semkiv

The elastic, thermodynamic, electronic, and optical properties of recently discovered and potentially technologically important transition metal boride NbRuB, have been investigated using the density functional formalism. Both generalized…

材料科学 · 物理学 2017-03-21 F. Parvin , S. H. Naqib

Understanding the complexities of electronic and magnetic ground states in solids is one of the main goals of solid-state physics. Materials with the canonical ThCr$_2$Si$_2$-type structure have proved particularly fruitful in this regards,…

强关联电子 · 物理学 2015-06-12 James R. Neilson , Anna Llobet , Jiajia Wen , Matthew R. Suchomel , Tyrel M. McQueen

Ternary semiconductor CuYS2 is studied by using the first-principles methods in the density functional theory (DFT) framework. The structural, electronic, optical and elastic properties were calculated at the ambient and elevated…

材料科学 · 物理学 2013-09-13 M. G. Brik

We systematically study the effect of high pressure on the structure, electronic structure and transport properties of 2H-MoS$_2$, based on first-principles density functional calculations and the Boltzmann transport theory. Our calculation…

材料科学 · 物理学 2013-09-18 Huaihong Guo , Teng Yang , Peng Tao , Yong Wang , Zhidong Zhang

In this study, using the density functional theory, we have investigated the bulk physical properties like structural, electronic band structure, elastic properties, thermal properties, optical properties and bonding features of AlPO4…

材料科学 · 物理学 2024-07-29 A. S. M. Muhasin Reza , Md. Asif Afzal , S. H. Naqib

Using the hybrid exchange-correlation functional within the density-functional theory, we have systematically investigated the structural and electronic properties of MO (M = Be, Mg, Ca, Sr, Ba, Zn, Cd) in binary rocksalt (B1), zincblende…

材料科学 · 物理学 2019-03-19 Jinying Yu , Mingke Zhang , Zihan Zhang , Shangwei Wang , Yelong Wu

Metal-insulator transition materials such as NbO2 have generated much excitement in recent years for their potential applications in computing and sensing. NbO2 has generated considerable debate over the nature of the phase transition, and…

ReS$_2$ is considered as a promising candidate for novel electronic and sensor applications. The low crystal symmetry of the van der Waals compound ReS$_2$ leads to a highly anisotropic optical, vibrational, and transport behavior. However,…

Based on ab initio density-functional-theory using generalized gradient approximation, we systematically study the optical and electronic properties of the insulating dense sodium phase (Na-hp4) reported recently [Ma \textit{et al.}, Nature…

材料科学 · 物理学 2015-05-18 Dafang Li , Hanyu Liu , Bao-Tian Wang , Hongliang Shi , Shao-Ping Zhu , Jun Yan , Ping Zhang

We present a detailed density functional theory based calculations of the structural, elastic, lattice dynamical, thermophysical, and optoelectronic properties of ternary semiconductors CaZn$_2$X$_2$ (X = N, P, As) in this paper. The…

材料科学 · 物理学 2022-11-01 Md. Sajidul Islam , Razu Ahmed , Md. Mahamudujjaman , R. S. Islam , S. H. Naqib

The performance of two modern density-functionals, HSE06 and TB-mBJ, on predicting electronic structures of metal oxides, chalcogenides and nitrides, is studied in terms of band gaps, band structure and projected density-of-states. Contrary…

材料科学 · 物理学 2013-03-22 Wenqing Li , Christian F. J. Walther , Agnieszka Kuc , Thomas Heine

Magnesium alanate Mg(AlH4)2 has recently raised interest as a potential material for hydrogen storage. We apply ab initio calculations to characterize structural, electronic and energetic properties of Mg(AlH4)2. Density functional theory…

材料科学 · 物理学 2007-05-23 M. J. van Setten , G. A. de Wijs , V. A. Popa , G. Brocks