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The topological Weyl semimetal CaSn3, belonging to the AuCu3 type cubic structure, is an important electronic system to investigate both from the point of view of fundamental physics and prospective applications. In this work, we have…

材料科学 · 物理学 2020-01-01 M. I. Naher , S. H. Naqib

First-principles calculations were performed to investigate electronic and elastic properties of the newly discovered 7.5K superconductor: layered Nb2InC. As a result, electronic bands, total and site-projected l- decomposed DOS at the…

超导电性 · 物理学 2010-04-08 I. R. Shein , A. L. Ivanovskii

In the present work, the electronic and vibrational properties of both pristine V$_2$C and fully-terminated V$_2$CT$_2$ (where T = F, O, OH) 2D monolayers are investigated using density functional theory. Firstly, the atomic structures of…

The work carried out first-principles calculations within the framework of density functional theory to study the structural stability of the CsSnI3 compound and the influence of phase transitions on their electronic and optical properties.…

LaRh2X2 (X = Al, Ga, In) compounds crystallize in a tetragonal layered ThCr2Si2-type structure and belong to a family of low critical temperature superconductors. Using first-principles density functional theory calculations implemented in…

First-principles methods have recently established themselves in the field of photocathode research to provide microscopic, quantum-mechanical characterization of relevant materials for electron sources. While most of the existing studies…

材料科学 · 物理学 2022-12-19 Richard Schier , Holger-Dietrich Sassnick , Caterina Cocchi

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…

材料科学 · 物理学 2022-02-15 M. A. Ali , M. M. Hossain , M. M. Uddin , A. K. M. A. Islam , S. H. Naqib

Highly textured chalcogenide films have recently gained significant interest for phase-change memory applications. Several reports have highlighted that programming efficiency improves in devices featuring superlattice stacks, such as…

Vacancy-ordered double perovskites K2SnX6 (X = I, Br, Cl) attract significant research interest due to their potential application as light-absorbing materials in perovskite solar cells. However, a deep insight into their material…

材料科学 · 物理学 2019-08-30 Un-Gi Jong , Chol-Jun Yu , Yun-Hyok Kye

We simulate the photodynamics of gas-phase cyclobutanone excited to the S$_2$ state using fewest switches surface hopping (FSSH) dynamics powered by time-dependent density functional theory (TDDFT). We predict a total C3+C2 photoproduct…

化学物理 · 物理学 2024-07-23 Ericka Roy Miller , Sean J. Hoehn , Abhijith Kumar , Dehua Jiang , Shane M. Parker

Ternary chalcogenides have been of recent investigation for applications in photovoltaic and thermoelectric devices. We study the structural, electronic, optical, and thermoelectric properties of nine ternary chalcogenides, NaAX$_{2}$,…

材料科学 · 物理学 2020-06-05 I. S. Khare , N. J. Szymanski , D. Gall , R. E. Irving

Titanium nitride halides, TiNX (X = F, Cl, Br, I) in the {\alpha}-phase (orthorhombic) are exciting quasi two-dimensional (2D) electronic systems exhibiting a fascinating series of electronic ground states under different conditions.…

材料科学 · 物理学 2020-04-22 M. M. Hossain , S. H. Naqib

A first-principles study of the electronic and superconducting properties of the Ni$_2$VAl Heusler compound is presented. The electron-phonon coupling constant of $\lambda_{ep}$ = 0.68 is obtained, which leads to a superconducting…

超导电性 · 物理学 2016-03-04 P V Sreenivasa Reddy , V Kanchana , G Vaitheeswaran , David J Singh

We use density functional theory to calculate the electronic band structures, cohesive energies, phonon dispersions, and optical absorption spectra of two-dimensional In$_2$X$_2$ crystals, where X is S, Se, or Te. We identify two…

介观与纳米尺度物理 · 物理学 2014-09-19 V. Zolyomi , N. D. Drummond , V. I. Fal'ko

We report a phonon density of states measurement of $\alpha$-ZnCl$_{2}$ using the coherent inelastic neutron scattering technique and a lattice dynamical calculation in four crystalline phases of ZnCl$_{2}$ using a transferable interatomic…

材料科学 · 物理学 2007-05-23 A. Sen , Mala N. Rao , R Mittal , S. L. Chaplot

Lead and tin chalcogenides have been studied widely due to their promising thermoelectric (TE) properties. Further enhancement in their TE efficiency has been reported upon the reduction of the dimension, which is an important feature in…

材料科学 · 物理学 2020-10-14 Abhiyan Pandit , Bothina Hamad

We have used density functional theory to study the recently predicted MAX phase borides Hf2AB (A = Pb, Bi) in where the mechanical, electronic, thermal, and optical properties have been investigated for the first time. A good agreement of…

材料科学 · 物理学 2021-01-15 M. S. Hossain , M. A. Ali , M. M. Hossain , M. M. Uddin

Charge-density-wave (CDW) order and superconductivity often compete in low-dimensional materials, yet their interplay in Janus MXenes remains largely unexplored. Here, we present a comprehensive first-principles investigation of the…

超导电性 · 物理学 2026-03-09 Jakkapat Seeyangnok , Udomsilp Pinsook , Graeme J Ackland

Atomically thin layer transition metal dichalcogenides have been intensively investigated for their rich optical properties and potential applications in nano-electronics. In this work, we study the incoherent optical phonon and exciton…

We present a first-principles density functional theory study of the structural, electronic, optical, and thermoelectric properties of Sc2BeX4 (X = S, Se) chalcogenides for energy applications. Both compounds are dynamically and…

材料科学 · 物理学 2025-10-02 Ahmad Ali , Haris Haider , Sikander Azam , Muhammad Talha , Muhammad Jawad , Imran Shakir