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We have performed ab-initio calculations using plane-wave ultraviolet pseudopotential technique based on the density-functional theory (DFT) to study the structural, mechanical, electronic, optical and thermodynamic properties of…

Materials Science · Physics 2017-09-26 Md. Atikur Rahman , Md. Zahidur Rahaman , Md. Abdur Razzaque Sarker

Superconductivity is observed with critical temperature $T_{c}$ = 2.0 K in self-flux-grown single crystals of $CaBi_{2}$. This material adopts the $ZrSi_{2}$ structure type with lattice parameters a = 4.696(1) $\AA$, b = 7.081(2) $\AA$ and…

The elastic properties and lattice dynamics of Ti$_2$AlC, Ti$_2$AlN, Ti$_2$GaC, Ti$_2$GaN, Ti$_2$PbC, Ti$_2$CdC and Ti$_2$SnC have been investigated using the density functional theory within the generalized gradient approximations as…

Materials Science · Physics 2020-11-17 G. K. Arusei , M. Chepkoech , G. O. Amolo , N. Wambua

We have measured the reflectivity spectra of the iron based superconductor LiFeAs (Tc = 17.6 K) in the temperature range from 4 to 300 K. In the superconducting state (T < Tc), the clear opening of the optical absorption gap was observed…

The physical characteristics of the novel chalcogenide MAX phase Hf2SeC have been investigated using the DFT method. The obtained lattice constant and elastic constants (Cij) are compared with previous results to check the consistency of…

Materials Science · Physics 2022-02-08 M. A. Ali , Muhammad Waqas Qureshi

Employing the first-principles computations based on the density functional theory (DFT), we have investigated the structural, mechanical, electronic, bonding, optical and thermodynamics properties of newly discovered bulk superconductors…

Materials Science · Physics 2018-02-01 Md. Atikur Rahman , Md. Zahidur Rahaman , Md. Lokman Ali , Md. Shahjahan Ali

We report on a thorough optical investigation over a broad spectral range and as a function of temperature of the charge dynamics in Ba(Co$_x$Fe$_{1-x}$)$_2$As$_2$ compounds for Co-doping ranging between 0 and 18%. For the parent compound…

Strongly Correlated Electrons · Physics 2015-05-18 A. Lucarelli , A. Dusza , F. Pfuner , P. Lerch , J. G. Analytis , J. -H. Chu , I. R. Fisher , L. Degiorgi

In this study, we carried out an investigation of the EuCoA$_2$As$_2$ compound, focusing on its various physical properties. Our analysis covered the structural, magnetic, electronic, optical, thermodynamic and thermoelectric…

Materials Science · Physics 2023-10-16 S. Benyoussef , A. Jabar , L. Bahmad

Transition metal dichalcogenides (TMDCs) belong to technologically important compounds. We have explored the structural, elastic, bonding, optoelectronic and some thermo-physical properties of ZrX2 (X = S, Se, Te) TMDCs in details via…

Materials Science · Physics 2021-02-25 Md. Mahamudujjaman , Md. Asif Afzal , R. S. Islam , S. H. Naqib

In this paper, we have presented the density functional theory (DFT) based calculations performed within the first-principles pseudopotential method to investigate the physical properties of the newly discovered superconductor LaRu2As2 for…

Materials Science · Physics 2017-04-05 M. A. Hadi , M. S. Ali , S. H. Naqib , A. K. M. A. Islam

SnTaS2 is a recently discovered layered semimetal exhibiting type-II low transition temperature superconductivity. Except some superconductivity related parameters, most of the physical properties, namely, elastic, mechanical, bonding,…

Materials Science · Physics 2022-07-13 M. I. Naher , M. Mahamudujjaman , A. Tasnim , R. S. Islam , S. H. Naqib

First principles pseudopotential calculations have been performed for the first time to investigate the phonon dispersion, thermodynamic and optical properties including charge density, Fermi surface, Mulliken population analysis,…

Materials Science · Physics 2018-04-04 A. Chowdhury , M. A. Ali , M. M. Hossain , M. M. Uddin , S. H. Naqib , A. K. M. A. Islam

In this study, we investigate the electronic, optical, thermoelectric, and thermodynamic properties of Ca(InP)2 through comprehensive theoretical calculations Ca(InP)2 is a compound with promising applications in materials science and…

Materials Science · Physics 2023-12-05 S. Dahri , A. Jabar , L. Bahmad , L. B. Drissi , R. Ahl Laamara

We investigated a high-quality MgB$_{2}$ thin film with a thickness of $\sim$1000 nm on an Al$_{2}$O$_{3}$ substrate using optical spectroscopy. We measured the reflectance spectra of the film at various temperatures both below, and above,…

Superconductivity · Physics 2018-08-21 Yu-Seong Seo , Jae Hak Lee , Won Nam Kang , Jungseek Hwang

The attachment of redox active molecules to transition metal dichalcogenides (TMDs), such as MoS2, constitutes a promising approach for designing electrochemically switchable devices through the control of the material charge/spin transport…

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.…

Materials Science · Physics 2020-04-01 Md. Maruf Mridha , S. H. Naqib

In the present study we employed density functional theory calculations to investigate the mechanical behavior, bonding nature and defect processes of the new ordered MAX phase Mo2ScAlC2. The mechanical stability of the compound is verified…

Materials Science · Physics 2017-02-13 M. A. Hadi , S. H. Naqib , S. -R. G. Christopoulos , A. Chroneos , A. K. M. A. Islam

The discovery of MAX phase borides has added a new dimension for research in the materials science community. In this paper, a first-principles study of the newly known MAX phase borides Zr2AB2 (A = In, Tl) has been carried out. The…

Materials Science · Physics 2022-02-15 M. A. Ali , M. M. Hossain , M. M. Uddin , A. K. M. A. Islam , S. H. Naqib

We report on the temperature dependence of the quasiparticle density of states (DOS) in the simple binary compound MgB2 directly measured using scanning tunneling microscope (STM). To achieve high quality tunneling conditions, a small…

Superconductivity · Physics 2009-11-07 F. Giubileo , D. Roditchev , W. Sacks , R. Lamy , D. X. Thanh , J. Klein , S. Miraglia , D. Fruchart , J. Marcus , Ph. Monod

The elastic, thermodynamic, and electronic properties of fluorite RuO_2 under high pressure are investigated by plane-wave pseudopotential density functional theory. The optimized lattice parameters, elastic constants, bulk modulus, and…

Materials Science · Physics 2017-08-23 Z. J. Yang , A. M. Guo , Y. D. Guo , J. Li , Z. Wang , Q. Liu , R. F. Linghu , X. D. Yang