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相关论文: DFT study of rare earth (Tm, Yb, Ce) doped ZnO: st…

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We report the calculated fundamental band gaps of \emph{wurtzite} ternary alloys Zn$_{1-x}$M$_x$O (M=Mg, Cd) and the band offsets of the ZnO/Zn$_{1-x}$M$_x$O heterojunctions, these II-VI materials are important for electronics and…

材料科学 · 物理学 2017-01-26 Haitao Yin , Junli Chen , Yin Wang , Jian Wang , Hong Guo

Understanding the behavior of 4$f$ electrons in materials containing rare earth elements is one of the fundamental questions within condensed matter physics. In this work the electronic properties of isostructural CeCN$_5$ and TbCN$_5$,…

We present an ab initio, self consistent density functional theory (DFT) description of ground state electronic and related properties of hexagonal boron nitride (hex-BN). We used a local density approximation (LDA) potential and the linear…

材料科学 · 物理学 2020-07-15 Y. Malozovsky , C. Bamba , A. Stewart , L. Franklin , D. Bagayoko

The elastic, electronic and optical properties of MNNi3 (M= Zn, Sn and Cu) have been calculated using the plane-wave ultrasoft pseudopotential technique which is based on the first-principles density functional theory (DFT) with generalized…

材料科学 · 物理学 2015-05-30 M. A. Helal , A. K. M. A. Islam

We have studied the physical properties of M2InC (M = Zr, Hf and Ta) MAX phases ternary carbides using density functional theory (DFT) methodology. The structural, elastic and electronic properties are revisited (and found to be in good…

材料科学 · 物理学 2018-05-23 F. Sultana , M. M. Uddin , M. A. Ali , M. M. Hossain , S. H. Naqib , A. K. M. A. Islam

We present a simplified density functional theory (DFT) method to com- pute vertical electron and hole attachment energies to frontier orbitals of molecules absorbed on insulating films supported by a metal substrate. The adsorbate and the…

介观与纳米尺度物理 · 物理学 2017-08-29 Ivan Scivetti , Mats Persson

The electrical, magnetic, thermal and optical characteristics of Gallium (Ga) doped silicene are investigated using density functional theory (DFT). The effect of doping is studied by tuning dopant concentrations as well as examining varied…

材料科学 · 物理学 2022-04-05 Nzar Rauf Abdullah , Botan Jawdat Abdullah , Vidar Gudmundsson

The geometrical and electronic structure of potassium doped phenanthrene, \ce{K3C14H10}, have been studied by first-principles density functional theory. The main effect of potassium doping is to inject charge in the narrow phenanthrene…

材料科学 · 物理学 2011-06-03 P. L. de Andres , A. Guijarro , J. A. Verges

The nuclear-electronic orbital (NEO) method is a well-established approach for treating nuclei quantum mechanically in molecular systems beyond the usual Born-Oppenheimer approximation. In this work, we present a strategy to implement the…

Density functional theory (DFT) is the de facto approach for predicting self-consistent-field electronic structures of ground-state configurations of complex atoms, molecules, and solids and providing their property data for materials…

材料科学 · 物理学 2024-01-30 Zi-Kui Liu

The electronic properties of pure and As-doped Si nanowires with radii up to 9.53 nm are studied using large scale density functional theory (DFT) calculations. We show that, for the undoped nanowires, the DFT bandgap reduces with…

材料科学 · 物理学 2019-10-24 Chathurangi Kumarasinghe , David R. Bowler

The role of Cr incorporation into the ZnO were probed through investigations into the structural, optical and magnetic properties. Zn1-xCrxO with x = 0, 0.01, 0.03 and 0.05, nanoparticles were prepared by solution combustion method. Powder…

材料科学 · 物理学 2021-11-16 H. S. Lokesha , P. Mohanty , A. R. E. Prinsloo , C. J. Sheppard

Advanced theoretical investigations are crucial for understanding the structural growth mechanisms, optoelectronic properties, and photocatalytic activity of photoelectrodes for efficient photoelectrochemical water splitting. In this work,…

材料科学 · 物理学 2025-03-24 Abdul Ahad Mamun , Muhammad Anisuzzaman Talukder

We use a combination of conventional density functional theory (DFT) and post-DFT methods, including the local density approximation plus Hubbard $U$ (LDA+$U$), PBE0, and self-consistent $GW$ to study the electronic properties of…

材料科学 · 物理学 2011-08-10 Gaoyang Gou , Joseph W. Bennett , Hiroyuki Takenaka , Andrew M. Rappe

By means of ab initio calculations within the density functional theory (DFT) electronic and magnetic properties of BaTiO3/LaMnO3 interface were investigated. An impact of ferroelectric overlayer thickness onto the interface properties was…

材料科学 · 物理学 2022-06-07 Irina Piyanzina , Rinat Mamin

Using the first-principles density-functional theory plan-wave pseudopotential method, we investigate the structure and magnetism in 25% Mn substitutive and interstitial doped monoclinic, tetragonal and cubic ZrO2 systematically. Our…

材料科学 · 物理学 2015-05-13 Xingtao Jia , Wei Yang , Minghui Qin , Jianping Li

A comprehensive study of the electronic and structural phase transition from 1T` to Td in the bulk Weyl semimetal Mo1-xWxTe2 at different doping concentrations has been carried out using time-of-flight momentum microscopy (including…

In this study, we report the enhancement in field emission (FE) properties of ZnO nanostructure by Ni doping at the base pressure of ~1 x 10-8 mbar, which were grown by the simple wet chemical process. ZnO nanostructure shows single…

Rare earth phosphates have garnered significant interest due to their versatile properties, including high chemical stability, thermal resistance, luminescence, and the ability to adopt various crystalline structures. Density functional…

材料科学 · 物理学 2024-11-05 Edric X. Wang , Ligen Wang , Qi-Jun Hong

The magnetic transition-metal (TM) @ oxide nanoparticles have been of great interest due to their wide range of applications, from medical sensors in magnetic resonance imaging to photo-catalysis. Although several studies on small clusters…

材料科学 · 物理学 2017-09-26 Yaowen Hu , Chuting Ji , Xiaoxu Wang , Jinrong Huo , Qing Liu , Yipu Song